For Clinicians | Doxycycline Uses

couple looking at computer asking questions

For Clinicians | Doxycycline Uses

Lyme Prophylaxis, Malaria Prevention, Acne, and the Doxy-PEP Debate

By Dr. Jamie Wilkey, PharmD — Director of Clinical Strategy, Jase
Medically reviewed and edited by Kristen Carpenter, PA-C

We’re continuing our series on the antibiotics we see most often come up in medical preparation conversations, one drug at a time. This week it is ….drum roll please…..doxycycline’s turn.

Doxycycline is basically the Swiss Army knife of antibiotics, except instead of a bottle opener and tiny scissors, you get malaria prevention and clearer skin. Want stellar proof? It works on Lyme disease protocol, a malaria prevention plan, an acne prescription, and now a post-exposure STI regimen. Doxycycline really does treat five unrelated problems. It isn’t that the drug just has killer marketing (although, it totally does that). It’s pharmacology: one mechanism, several targets, and, as it turns out, a guideline landscape that doesn’t fully agree on how to use it.

Take the tick bite question. The Infectious Diseases Society of America, the American Academy of Neurology, and the American College of Rheumatology all endorse a single 200 mg dose within 72 hours of a high-risk bite¹. The International Lyme and Associated Diseases Society doesn’t². Same drug and window, yet different answer depending on which guideline you’re using.

What is doxycycline used for?

More than you’d expect from one antibiotic. Doxycycline treats Lyme disease, prevents malaria, clears chlamydia, controls acne and rosacea, and, as of a 2024 CDC update³, prevents certain bacterial STIs after exposure in specific patients. 

That’s not doxycycline being a jack-of-all-trades in the vague sense. It comes down to mechanism. Doxycycline blocks protein synthesis in bacteria, the same core action tetracyclines have always had. It also disrupts a structure inside the malaria parasite called the apicoplast, a leftover organelle the parasite can’t survive without.

Quick reference: doxycycline by indication

Treatment: Lyme disease (a 10-day course performs as well as longer regimens⁴), rickettsial infections, chlamydia, and acne or rosacea.

Prevention: a single 200 mg dose within 72 hours of a high-risk tick bite, or daily dosing started before travel to a malaria-endemic area⁵.

Adjunct: reduces gum-pocket depth after periodontal treatment⁶.

Anthrax exposure: 100 mg twice daily for 60 days⁷., the CDC’s long-standing post-exposure regimen following high-risk Bacillus anthracis exposure. This one’s been on the Strategic National Stockpile for over two decades, not a new addition.

Emerging and debated: a single post-exposure dose to reduce the risk of certain bacterial STIs. That one’s newest, and it’s not settled, so it gets its own section next.

Five categories, one drug. Four of which are on well-worn clinical ground.

Where this fits into appropriate medical preparation

Three of these five uses are built for a standby kit: the single tick-bite dose, prescribed before symptoms show up; the pre-travel malaria regimen, started before a patient ever sets foot somewhere with risk; and doxycycline kept on hand ahead of a possible anthrax exposure. These work only because they’re prescribed ahead of need, not after.

That’s what we mean by appropriate medical preparation: a bounded, clinician-controlled step for conditions where the evidence is strong and the timing is predictable well in advance.

Acne, chlamydia treatment, and Doxy-PEP don’t fit that same frame. Each is answering a different clinical question, on a different timeline. None of this is a replacement for primary care. It’s the same clinical standard we’d apply at the time of symptoms, just applied earlier, for the narrow slice of doxycycline’s uses where earlier actually helps.

The bottom line

Doxycycline’s breadth isn’t hype or overuse. It has a great mechanism that allows one antibiotic to serve in several clinical roles since it blocks protein synthesis in bacteria and disrupts a different structure entirely in the malaria parasite. Most of that list is settled, well-worn clinical ground. Doxy-PEP isn’t. CDC’s 2024 guidance applies it to a defined population, adults with a bacterial STI diagnosis in the past 12 months, not sexually active adults broadly³. That population has already been redrawn once: WHO issued its own endorsement in 2026, broadly aligning with CDC, while Europe’s ECDC held back, citing resistance concerns over a population-level rollout⁸ ⁹. 

The uses that actually belong in a standby kit, prescribed ahead of need, are the tick-bite dose, pre-travel malaria regimen, and anthrax exposure backup. That’s the appropriate medical preparation slice of this list, and it’s the piece Jase is built around.

Sources

  1. IDSA/AAN/ACR 2020 Lyme guideline, single 200 mg dose within 72 hours of a high-risk tick bite. Infectious Diseases Society of America. idsociety.org/practice-guideline/lyme-disease
  2. ILADS treatment guidelines (the dissenting position). ilads.org/patient-care/ilads-treatment-guidelines
  3. CDC Clinical Guidelines on Doxycycline Postexposure Prophylaxis, MMWR 2024. Confirms 200 mg within 72 hours, population is MSM and transgender women with a bacterial STI in the past 12 months. cdc.gov/mmwr/volumes/73/rr/rr7302a1.htm
  4. Shorter versus longer antimicrobial therapy for early Lyme disease, systematic review and meta-analysis, confirming no significant difference between ≤10-day and longer courses. sciencedirect.com/science/article/abs/pii/S0732889324000440
  5. CDC Yellow Book, Malaria chapter, chemoprophylaxis dosing and timing. cdc.gov/yellow-book/hcp/travel-associated-infections-diseases/malaria.html
  6. Subantimicrobial-dose doxycycline (Periostat), FDA-approved 1998 as adjunct to scaling and root planing, reduces pocket depth. ncbi.nlm.nih.gov/pmc/articles/PMC6473443
  7. CDC Anthrax Doxycycline Emergency Use Instructions, 100 mg twice daily for 60 days post-exposure. stacks.cdc.gov/view/cdc/56837/cdc_56837_DS1.pdf
  8. WHO news release, first recommendation on doxycycline PEP, May 28, 2026. who.int/news/item/28-05-2026-who-issues-first-recommendation-on-doxycycline-post-exposure-prophylaxis
  9. ECDC guidance on doxycycline for STI prevention, January 2026, recommends against population-level rollout. ecdc.europa.eu/en/news-events/ecdc-issues-guidance-doxycycline-sti-prevention

 

Lifesaving Solutions

Everyone should be empowered to care for themselves and their loved ones during the unexpected. Check out our recent lifesaving products today.
Learn More

Recent Posts

Keeping you informed and safe.

For Clinicians | MenACWY vs MenB

For Clinicians | MenACWY vs MenB

For Clinicians | MenACWY vs MenB A Back-to-School Meningococcal Vaccine Refresher By Dr. Jamie Wilkey, PharmD — Director of Clinical Strategy, JaseMedically reviewed and edited by Kristen Carpenter, PA-C Fall is coming, and with that are newly minted college students...

read more
For Clinicians | Strep Throat vs. Sore Throat

For Clinicians | Strep Throat vs. Sore Throat

For Clinicians | Strep Throat vs. Sore Throat Do You Need Antibiotics? By Dr. Jamie Wilkey, PharmD — Director of Clinical Strategy, JaseMedically reviewed and edited by Kristen Carpenter, PA-C Most sore throats don't need an antibiotic. Most of us already know that....

read more
View Other Blog Posts

Join Our Newsletter

Our mission is to help you be more medically prepared. Join our newsletter and follow us on social media for health and safety tips each week!

For Clinicians | The Family Emergency Plan Checklist

couple looking at computer asking questions

For Clinicians | The Family Emergency Plan Checklist

The Medical Layer Most Plans Miss

By Dr. Jamie Wilkey, PharmD — Director of Clinical Strategy, Jase
Medically reviewed and edited by Aaron Asay, PA-C, DMSc, FIBODM, FAWM

When disaster strikes, medical personnel in a busy ER often make critical treatment decisions with limited information about their patients.  Sometimes these decisions can potentially cause harm or delay care. An example of this is a delirious victim of a car accident presenting to an emergency department with no obvious injury but cannot inform providers that they are on blood thinners from a previous stroke. Clinicians sometimes care for patients whose emergency is made worse because critical information isn’t available. A missing medication list. An unknown medical history. No advance directive. The questions that really matter simply go unanswered while care moves forward. Many of these problems are preventable with a little preparation before the crisis ever begins. This article is written for clinicians but designed to be shared with patients and families. Use it as a conversation starter during routine visits or simply hand it to patients as a practical guide to building the medical layer of a family emergency plan.

Most plans get the basics right: a contact list, a meeting place, and a go-bag with flashlights and granola bars. What they often miss is the information clinicians need when a patient cannot speak for themselves: a current medication list that travels with the patient, an Emergency Information Form for children with complex medical needs, a healthcare proxy designated before it is ever needed, and copies of these documents stored where a single fire or flood cannot destroy them all.

For example, an elderly parent gets evacuated from her assisted living facility, and staff are unable to tell the family where she went. A child with a complex diagnosis ends up in an unfamiliar ER away from his regular specialists, and the physician on call has little information to form a treatment plan. A house fire, destroys the only copies of every important document because they are sitting in a binder on the burning shelf inside.

Three different families, three different emergencies, and the same failure underneath all of them: a plan that never accounted for the medical layer and redundancy.

None of this takes a lawyer or a lot of time. It takes a checklist, built once and occasionally reviewed, so nobody’s improvising it under stress, when the documents are hardest to find and the stakes are highest. Here’s what it contains: emergency contacts, medical documents, advance directives, the family members and pets who need their own line item, and if other information is stored digitally, the web address, usernames and passwords to access those sites.

Contacts and Communication

Many families already have a contact list with important emergency information. A complete list should include more than just phone numbers. Record contact information for every household member. Add one or two trusted local relatives, friends, or neighbors who can help if family members become separated. Include your primary care clinician, pediatrician, important specialists, pharmacy, schools or daycare, employers, caregivers, and veterinarian if you have pets. Add your family’s home address, and local emergency and utility numbers. This is a critical piece of the plan and not to be skipped.

In addition to the above, pick one out-of-town contact, someone far enough away that a local disaster won’t hit their phone lines too.¹ Local circuits jam first in an emergency; a long-distance call often goes through when a call across town won’t. Every family member calls that one person to check in, so nobody is trying to reach five people directly.

Put the actual list in writing, and store in more than one place: a card in every wallet, a copy on the fridge, a copy saved on every phone. FEMA’s fillable Family Emergency Communication Plan and the Red Cross Family Disaster Plan template both do this well.2 Save this list in everyone’s online password manager as well and on the Notes section of your cellphone so you always have it with you and easy to access. This is also an excellent place to store a current picture of each family member since it gets reviewed periodically.  At each review, update the photo. It is especially important for small children whose appearance changes significantly from year to year.

Pick two meeting places, not one: one nearby for a sudden emergency like a fire, one outside the neighborhood entirely for anything that requires evacuation.3

Review it twice a year, or after any move, new phone number, new school, or job change.⁴

The Medical Documents Layer

Two documents belong here, and most families are missing at least one of them.

The first is a written medication list, current, legible, and physically with the family, not just in a portal login nobody can reach mid-evacuation. We’ve already built out the full framework for this, chronic medications and contingency medications both, in Family Disaster Preparation. Don’t rebuild it here; go read that one and bring the actual list to this checklist.

The second is the one most parents have never heard exists, and most clinicians rarely mention it: the Emergency Information Form, built jointly by the AAP and ACEP specifically for children with complex health needs.⁵ It’s a one-page clinical summary, diagnoses, medications, baseline status, specialists, the works, designed for exactly the scenario in this article’s second story: a child in an unfamiliar ER, hours from his regular team, with a physician on call who has little information to go on.

 A simulation study putting 24 providers through the same emergency scenario, with and without the form, found a substantial difference: a median 84.2% critical-action score with the EIF versus 12.5% without one, and a 30% complication rate versus 100%.⁶ That is a huge improvement in outcome over not having the form in an emergency setting. If a child in the family has a complex or chronic diagnosis, this form is worth the twenty minutes it takes to fill out, and worth handing a copy to the pediatrician to keep on file too.

A Healthcare Proxy, on Paper, Before Anyone Needs One

This one gets skipped because it sounds like it’s only for the elderly. It isn’t. Any adult, at any age, can end up unable to speak for themselves. A car accident leading to a sedated stay in the ICU is a good example of why it’s a good idea for everyone to have someone trusted who can make decisions on their behalf.

A healthcare proxy is named through a variety of ways that differ from state to state. Generally this is accomplished through a durable power of attorney for health care, or the equivalent per the state. This then becomes one of the two documents that make up an advance directive, alongside a living will.⁷ The proxy has to be 18 or older (19 in Alabama and Nebraska) and of sound mind, and the National Institute on Aging’s own guidance says not to name your own doctor or their staff, someone who already has a clinical relationship with you isn’t the right fit for this role.⁸

Once signed, it only works if the people making decisions for you actually have it. Give a copy to the proxy themselves, and give your medical provider the proxy’s name and contact information as well.⁹ Put a date on the calendar to review it once a year, or sooner if there’s been a divorce, a move, or a significant change in health.¹⁰

Elderly Relatives and Pets: Two Line Items People Forget

For a relative in assisted living or a nursing home, don’t wait for an emergency to discover the facility’s evacuation plan. Ask now: who calls the family, and when, if residents are moved. Medicare- and Medicaid-certified facilities are required to maintain emergency preparedness and communication plans, although exactly how families are notified varies by facility, so keep a copy of your relative’s own medication list and care needs with a family member too, not only on file at the facility.¹¹

For pets, the ASPCA’s list is short: a current microchip with up-to-date registration, up to two weeks of any pet medication in a waterproof container, and a copy of vaccination and vet records in a waterproof bag.¹² Some states don’t allow you to maintain pet medication so make sure you know your state laws. Decide the pet-friendly evacuation option before there’s an emergency; not every shelter takes animals, so a boarding kennel, pet-friendly hotel, or a friend’s home should already be on the list as well as an alternative location.

Storage: Redundancy Beats a Binder

A single binder on a shelf is what burned down with the house in the opening story. The fix isn’t a disaster-proof binder, though that’s not a bad idea, it’s not relying on a single copy of  your information to be available when you need it. 

Keep a physical copy somewhere secure that isn’t your house: with the out-of-town contact from section one, in a safe deposit box, or with a relative in another state. Keep a digital copy too, in a password manager or a shared cloud folder the whole family can reach from a phone. This could be the same place the contact list already lives if you followed that step.

And remember storage isn’t only about drawers. Some of these documents are already supposed to be safely stored with other people: the healthcare proxy holds a copy of the advance directive, the pediatrician holds a copy of the Emergency Information Form. If you have assessed the threats to your home and person, you should also consider threats to your information. A quick note about security, all of this information is very valuable to criminals. That factor makes the decision about where and how you store this information a high priority. If you need to consult a security expert for advice there are many choices available with a simple google search.

Quick Reference: The Family Emergency Plan Checklist

Contacts: One out-of-town contact everyone calls. Two meeting places, one nearby, one out of the neighborhood. Written list in every wallet, on the fridge, saved on every phone. Reviewed twice a year with updated photographs of each family member.

Medical documents: A current medication list that travels with the family including chronic, over-the-counter, and contingency meds. This is also a good place to record any drug allergies. An Emergency Information Form on file for any child with a complex or chronic diagnosis, and leave a copy with their pediatrician.

Advance directives: A healthcare proxy named on paper for every adult, not just the elderly members. Copies are left with the proxy and the provider. These should be reviewed annually or after a major life change.

Elderly relatives: Know the facility’s evacuation and family-notification plan in advance. Keep a copy of their medication list and care needs outside the facility as well.

Pets: Current microchip registration. Two weeks of pet medication in a waterproof container. Vet records and a photo in a waterproof bag. A pet-friendly evacuation option decided in advance.

Storage: A copy somewhere that isn’t the house, both physical and digital. These can be with the proxy, pediatrician, and/or the out-of-town contact.

The Bottom Line

None of the three families in the opening stories needed a lawyer, a weekend, or a lucky break. They needed the medical layer built before the emergency: a contact list, a medication list that is always accessible, a form for the child with complex needs, a healthcare proxy on paper, and none of it trapped in one place where a single fire or flood could destroy.

Most of the checklist takes an afternoon. The Emergency Information Form and the advance directive take a little longer, but both are the kind of document that only has to be built once and reviewed, not rebuilt from scratch every time life changes.

Build it calmly, before the crisis occurs. This is what makes the  difference between a family that’s ready and one that finds itself improvising in the moment it matters most.

Sources

  1. Red Cross / FEMA guidance on out-of-town emergency contacts: local phone lines can jam in a disaster, so a long-distance contact everyone checks in with is more likely to get through: https://www.redcross.org/get-help/how-to-prepare-for-emergencies/make-a-plan.html
  2. Red Cross guidance on emergency meeting places: pick two, one near home for a sudden emergency, one outside the neighborhood for anything requiring evacuation: https://www.redcross.org/get-help/how-to-prepare-for-emergencies/make-a-plan.html
  3. FEMA’s fillable Family Emergency Communication Plan and the Red Cross Family Disaster Plan Template: https://www.ready.gov/sites/default/files/2025-06/family-communication-plan_fillable-card.pdf and https://www.redcross.org/content/dam/redcross/atg/PDF_s/Preparedness___Disaster_Recovery/General_Preparedness___Recovery/Home/ARC_Family_Disaster_Plan_Template_r083012.pdf
  4. Red Cross recommendation to review the family disaster plan with household members every six months: https://www.redcross.org/get-help/how-to-prepare-for-emergencies/make-a-plan.html
  5. ACEP/AAP, Emergency Information Form for Children With Special Health Care Needs: a one-page clinical summary built to make a complex child’s medical history available when neither parent nor regular physician is reachable: https://www.acep.org/by-medical-focus/pediatrics/medical-forms/emergency-information-form-for-children-with-special-health-care-needs
  6. Abraham et al. (or listed authors), Emergency Information Forms for Children With Medical Complexity: A Simulation Study: median critical-action score 84.2% with EIF access versus 12.5% without (p<.001); complication rate 30% versus 100%: https://pmc.ncbi.nlm.nih.gov/articles/PMC5603153/
  7. National Institute on Aging, Advance Care Planning: Advance Directives for Health Care: the two most common advance directives are a living will and a durable power of attorney for health care, which names a health care proxy: https://www.nia.nih.gov/health/advance-care-planning/advance-care-planning-advance-directives-health-care 
  8. National Institute on Aging, Choosing a Health Care Proxy: proxy must generally be 18 or older (19 in Alabama and Nebraska) and of sound mind; recommends against naming your own health care provider or their staff: https://www.nia.nih.gov/health/advance-care-planning/choosing-health-care-proxy
  9. National Institute on Aging, Choosing a Health Care Proxy: give the signed durable power of attorney and living will to the proxy, and make sure your provider has the proxy’s name and contact information: https://www.nia.nih.gov/health/advance-care-planning/choosing-health-care-proxy
  10. National Institute on Aging, Advance Care Planning: review the plan at least once a year and after any major life event such as divorce, a move, or a major change in health: https://www.nia.nih.gov/health/advance-care-planning
  11. State long-term care emergency preparedness regulations generally require facilities to have a family-notification plan for evacuations, though implementation varies by state and facility: https://cdphe.colorado.gov/emergency-preparedness-rules-and-resources-for-nursing-homes-and-assisted-living-residences
  12. ASPCA, Disaster Preparedness: keep a two-week supply of any pet medication in a waterproof container, rotated periodically so it doesn’t expire; identify pet-friendly hotels, boarding kennels, or an out-of-area friend or relative before an emergency, since not all shelters accept animals: https://www.aspca.org/pet-care/general-pet-care/disaster-preparedness

 

Lifesaving Solutions

Everyone should be empowered to care for themselves and their loved ones during the unexpected. Check out our recent lifesaving products today.
Learn More

Recent Posts

Keeping you informed and safe.

For Clinicians | MenACWY vs MenB

For Clinicians | MenACWY vs MenB

For Clinicians | MenACWY vs MenB A Back-to-School Meningococcal Vaccine Refresher By Dr. Jamie Wilkey, PharmD — Director of Clinical Strategy, JaseMedically reviewed and edited by Kristen Carpenter, PA-C Fall is coming, and with that are newly minted college students...

read more
For Clinicians | Strep Throat vs. Sore Throat

For Clinicians | Strep Throat vs. Sore Throat

For Clinicians | Strep Throat vs. Sore Throat Do You Need Antibiotics? By Dr. Jamie Wilkey, PharmD — Director of Clinical Strategy, JaseMedically reviewed and edited by Kristen Carpenter, PA-C Most sore throats don't need an antibiotic. Most of us already know that....

read more
View Other Blog Posts

Join Our Newsletter

Our mission is to help you be more medically prepared. Join our newsletter and follow us on social media for health and safety tips each week!

For Clinicians | Food Poisoning, Stomach Flu, or H. Pylori

couple looking at computer asking questions

For Clinicians | Food Poisoning, Stomach Flu, or H. Pylori

Do You Actually Need Antibiotics?

By Dr. Jamie Wilkey, PharmD — Director of Clinical Strategy, Jase
Medically reviewed by Kristen Carpenter, PA-C — Clinical Advisory Board Member

Three patients, same complaint. One had a rough day after a backyard barbecue and is already turning the corner. One picked up whatever’s going around at daycare and brought it home to the whole family. One has lived with vague stomach discomfort for years. Ask any of the three if they have “a stomach infection” and they’d probably all say yes.

Only one of them actually does, in the literal sense. And not commonly tested for.

Food poisoning and the stomach flu get lumped in with real stomach infections constantly. Food poisoning and norovirus are usually done doing their damage by the time a patient’s in front of you, so there’s nothing left for an antibiotic to fix. There’s one specific presentation where reaching for antibiotics anyway doesn’t just fail to help, it can actively hurt the patient. And H. pylori sits underneath all of it: a real bacterial infection that can live in the stomach for years without a single symptom, then show up as heartburn nobody connects to the actual cause, and it’s the one of these three that almost always needs a real antibiotic course once someone thinks to look for it.

Getting this right changes what happens at the pharmacy counter and in urgent care. Here’s where the actual lines are for these top 3 ‘stomach bug’ presentations.

Do You Need Antibiotics for Food Poisoning or the Stomach Flu?

Almost never.
The reason is different for each.

Norovirus, the actual “stomach flu,” is viral. There’s no antibiotic target. Fluids and time are the entire treatment, and most people are through the worst of it in one to three days.

Food poisoning is where people expect a prescription and usually don’t need one. Most cases, Salmonella, Campylobacter, the toxin-producing bugs from undercooked meat or food left out too long, are self-limited in a healthy adult. IDSA’s own 2017 guidelines back this up directly: for uncomplicated Salmonella and Campylobacter in immunocompetent patients, the recommendation is supportive care, not antimicrobial therapy.¹ Antibiotics don’t reliably shorten the illness in these cases, and for Salmonella specifically, treating an otherwise uncomplicated infection can prolong how long someone keeps shedding the bacteria afterward.

There is only one big exception and that’s important for you to know. 

Bloody Diarrhea and Fever: Why Reaching for Antibiotics Can Backfire

This is the one every instinct in the room gets wrong, patient and clinician alike. Bloody diarrhea with fever looks like exactly the presentation that needs an antibiotic fast. It’s also the presentation where giving one, before you know what you’re treating, can make things worse.

The organism to worry about is Shiga toxin-producing E. coli, STEC, the kind behind most O157:H7 outbreaks. Killing the bacteria with an antibiotic can cause it to release more Shiga toxin as it dies, and that toxin is what drives hemolytic uremic syndrome, the kidney injury that’s the real danger here, especially in kids. CDC is direct about this: clinicians treating a patient whose presentation suggests STEC should know that giving an antimicrobial may raise the risk of HUS rather than lower it.² IDSA’s own guidelines back this with a strong recommendation: empiric antibiotics for bloody diarrhea, given before results are back, are not recommended in immunocompetent children or adults.³ For STEC confirmed to produce Shiga toxin 2, or when the toxin type isn’t yet known, IDSA goes further and says antimicrobial therapy should be avoided outright.⁴

The same logic applies to anti-diarrheal medications like loperamide. Slowing the gut down means the toxin sits in contact with the colon longer, and that’s also linked to higher HUS risk. The instinct to reach for Imodium while waiting on results is worth stopping while you’re at it.

This isn’t a blanket rule against ever treating bacterial diarrhea, and the mechanism explains why switching drugs isn’t a clever workaround: fluoroquinolones and trimethoprim-sulfamethoxazole are both potent triggers of the same bacterial stress response that ramps up Shiga toxin production. The largest look at real-world outcomes hasn’t found any antibiotic class that’s actually safer than the others. The safe default while you’re waiting on a stool culture and Shiga toxin testing stays the same: don’t treat empirically, and don’t reach for anti-motility agents, until you know what you’re dealing with.

  1. Pylori: The Infection That Can Sit for Years Before Anyone Tests for It

This is the one that doesn’t announce itself. H. pylori can live in the stomach lining for years without a single symptom, then surface as heartburn, bloating, or vague upper-abdominal discomfort that gets blamed on stress, coffee, diet, or just getting older. By the time someone brings it up, they’ve often been living with it for a decade.

It won’t show up on a routine stool culture. Culture works by growing an organism, and H. pylori isn’t detected that way.⁵ Finding it takes a test built for it specifically: a urea breath test, which picks up the byproduct of the bacteria’s own urease enzyme, or a stool antigen test, which looks for H. pylori antigen directly. Either has to be ordered by name; neither is part of a standard workup.

The stakes here go past symptom relief. WHO’s cancer research arm classified H. pylori as a human carcinogen back in 1994, and the evidence has only held up since: it’s a major driver of non-cardia gastric adenocarcinoma, and nearly every patient with gastric MALT lymphoma tests positive for it.⁶ That’s the actual argument for testing someone whose “just stress” stomach discomfort has gone on for years, not just comfort, an infection tied to cancer risk that’s fully treatable once it’s found.

And when it’s confirmed, treatment isn’t a guess. Fourteen days now beats the older 7 to 10 day courses, eradication rates run meaningfully higher.⁷ Which drugs matter too: clarithromycin-based triple therapy only holds up where local resistance is low and the patient hasn’t had a macrolide recently, and bismuth-based quadruple therapy is the safer default when resistance status is unknown.⁸ This is a real regimen decision, not a reflexive prescription.

Quick Reference: Which One, Which Answer

Norovirus (viral “stomach flu”): No test needed in typical cases. No antibiotics, there’s no target. Fluids and time, usually resolved in 1 to 3 days.

Uncomplicated food poisoning (Salmonella, Campylobacter, toxin-mediated): Stool culture only if severe, prolonged, or high-risk. Antibiotics not recommended for uncomplicated cases in immunocompetent patients. Supportive care is the treatment.

Bloody diarrhea with fever (possible STEC): Stool culture plus Shiga toxin testing, ordered specifically, before treating. Avoid empiric antibiotics and avoid anti-motility agents like loperamide until results are back. Avoid antimicrobials outright if Shiga toxin 2 is confirmed or the toxin type is unknown.

  1. pylori: Urea breath test or stool antigen test, ordered by name, not caught by routine stool culture. When confirmed, a real 14-day antibiotic course, bismuth quadruple therapy if resistance status is unknown, clarithromycin triple therapy only where local resistance is low.

What to Tell Your Patient

Most stomach bugs, the kind that hit hard and fast after a bad meal or a bug going around, don’t need antibiotics at all. Fluids, rest, and a few days usually settle it.

One exception: if diarrhea turns bloody and comes with fever, that’s a reason to call rather than push for an antibiotic. In some cases, antibiotics can make it worse instead of better, and that’s not an intuitive thing for a patient to already know.

The other stomach conversation to bring up: years of stomach discomfort chalked up to stress, coffee, or getting older is worth a specific test, not a shrug or an Rx for omeprazole. If it turns out to be H. pylori, it’s treatable.

The Bottom Line

Three complaints, one label, three different right answers. Most stomach bugs, viral or bacterial, resolve on their own and never need an antibiotic. The one case where reaching for one anyway can genuinely hurt a patient is bloody diarrhea with fever: test for Shiga toxin before treating, and skip the anti-motility agents too until you know what you’re dealing with. And the condition patients have been living with for years without a name, chronic dyspepsia blamed on stress or diet, deserves a specific test rather than another round of empiric PPI. If it’s H. pylori, a real 14-day course clears it.

Getting the label right is the whole job here. Getting it wrong either denies someone a cure they’ve needed for a decade, or pushes a treatment that makes a dangerous case worse.

Sources

  1. IDSA, 2017 Clinical Practice Guidelines for the Diagnosis and Management of Infectious Diarrhea: for uncomplicated Salmonella and Campylobacter infection in immunocompetent patients, the recommendation is supportive care rather than antimicrobial therapy, and treating uncomplicated Salmonella can prolong the carriage state: https://pmc.ncbi.nlm.nih.gov/articles/PMC5848254/
  2. CDC, Information for Clinicians: E. coli Infection: administering antimicrobial agents to a patient whose presentation suggests STEC may increase the risk of hemolytic uremic syndrome; anti-motility agents in STEC infection may increase the risk of toxic megacolon, HUS, and neurologic complications: https://www.cdc.gov/ecoli/hcp/guidance/index.html
  3. IDSA, 2017 Clinical Practice Guidelines for the Diagnosis and Management of Infectious Diarrhea, Recommendation 30: empiric antimicrobial therapy for bloody diarrhea while awaiting diagnostic results is not recommended in immunocompetent children and adults (strong recommendation, low-quality evidence): https://pmc.ncbi.nlm.nih.gov/articles/PMC5848254/
  4. IDSA, 2017 Clinical Practice Guidelines for the Diagnosis and Management of Infectious Diarrhea, Recommendation 35: antimicrobial therapy for infections attributed to STEC O157 and other STEC producing Shiga toxin 2, or when the toxin type is unknown, should be avoided (strong recommendation, moderate-quality evidence): https://pmc.ncbi.nlm.nih.gov/articles/PMC5848254/
  5. Merck Manual, Helicobacter pylori Infection: bacterial culture has limited use for H. pylori because of the organism’s fastidious nature; urea breath testing and stool antigen testing are preferred for initial diagnosis: https://www.merckmanuals.com/professional/gastrointestinal-disorders/gastritis-and-peptic-ulcer-disease/helicobacter-pylori-infection
  6. National Cancer Institute, H. Pylori and Cancer fact sheet: the World Health Organization’s International Agency for Research on Cancer classified H. pylori as a human carcinogen in 1994; it increases the risk of non-cardia gastric adenocarcinoma, and nearly all patients with gastric MALT lymphoma show signs of infection: https://www.cancer.gov/about-cancer/causes-prevention/risk/infectious-agents/h-pylori-fact-sheet
  7. Cochrane, Ideal length of treatment for Helicobacter pylori eradication (Review CD008337): across 45 studies, extending PPI-based triple therapy from 7 to 14 days raised the eradication rate from 72.9% to 81.9% (NNT 11): https://www.cochrane.org/CD008337/UPPERGI_ideal-length-of-treatment-for-helicobacter-pylori-h.-pylori-eradication
  8. American Academy of Family Physicians, H. pylori Infection: ACG Updates Treatment Recommendations: clarithromycin should be avoided where local resistance exceeds 15%; bismuth quadruple therapy should be strongly considered first-line where clarithromycin resistance is high or with any prior macrolide exposure; no regimen achieves a 100% cure rate: https://www.aafp.org/pubs/afp/issues/2018/0115/p135.html

 

Lifesaving Solutions

Everyone should be empowered to care for themselves and their loved ones during the unexpected. Check out our recent lifesaving products today.
Learn More

Recent Posts

Keeping you informed and safe.

For Clinicians | MenACWY vs MenB

For Clinicians | MenACWY vs MenB

For Clinicians | MenACWY vs MenB A Back-to-School Meningococcal Vaccine Refresher By Dr. Jamie Wilkey, PharmD — Director of Clinical Strategy, JaseMedically reviewed and edited by Kristen Carpenter, PA-C Fall is coming, and with that are newly minted college students...

read more
For Clinicians | Strep Throat vs. Sore Throat

For Clinicians | Strep Throat vs. Sore Throat

For Clinicians | Strep Throat vs. Sore Throat Do You Need Antibiotics? By Dr. Jamie Wilkey, PharmD — Director of Clinical Strategy, JaseMedically reviewed and edited by Kristen Carpenter, PA-C Most sore throats don't need an antibiotic. Most of us already know that....

read more
View Other Blog Posts

Join Our Newsletter

Our mission is to help you be more medically prepared. Join our newsletter and follow us on social media for health and safety tips each week!

For Clinicians | Cyclospora 101

couple looking at computer asking questions

For Clinicians | Cyclospora 101

Transmission, Diagnosis, and Treatment Behind the Current Case Surge

By Dr. Jamie Wilkey, PharmD — Director of Clinical Strategy, Jase
Medically reviewed by Kristen Carpenter, PA-C — Clinical Advisory Board Member

Your patients have probably already asked about this one. A parasite outbreak, spreading state by state, case counts climbing every week they check the news. Now almost every case of diarrhea is getting extra scrutiny and worry.

Here’s what most of the coverage isn’t quite getting right. CDC has been direct about it: there is no evidence of a single Cyclospora outbreak linking all the cases making headlines.¹ What’s actually happening is several separate clusters, each under its own traceback investigation, landing in the same news cycle because they’re all surfacing in the same few weeks of summer. A single traceable outbreak comes with a recall and an end date you can hand a worried patient. Several under-investigation clusters come with neither, plus a parasite that’s easy to miss on the test most of us recommend first.

So this isn’t another case-count update article. It’s the backstory: what Cyclospora cayetanensis actually is, why it shows up every summer, why the two things patients think are protecting them aren’t, why a clean stool workup doesn’t clear it, how to treat it, and what to tell the patient who’s allergic to the first-line drug. That’s how we want to help this week, whether you’re seeing the patient in the office or filling the prescription at the pharmacy counter.

What Cyclospora Actually Is, and Why It’s a Summer Problem

Cyclospora cayetanensis is a single-celled parasite, not a bacterium and not a virus, and that distinction is exactly why the stool tests built for bacterial pathogens keep missing it. It gets into the body the way most foodborne illnesses do: contaminated food or water, usually fresh produce that picked up the parasite in the field before it ever reached a grocery shelf.

That’s also why this tends to show up in the warmer months instead of everywhere at once. Documented outbreaks have clustered in spring and summer, tracking harvest windows for produce implicated before: cilantro, basil, raspberries, snow peas, bagged salad mixes.² The parasite needs warm, wet growing conditions to survive on a leaf or in irrigation water, which is most of why the season tracks the produce. CDC itself is upfront that the seasonal pattern isn’t fully understood and can vary year to year.

Symptoms start an average of a week after exposure, with a range from two days to two weeks or longer,³ which is plenty of time for most patients to have forgotten which salad or smoothie they’d even blame by the time they’re in front of you.

The traceback complaints you’ve probably heard about aren’t a competence problem. Contamination happens upstream, on the farm or in the wash water, long before the product reaches a shelf. By the time a cluster gets reported, the implicated produce is usually gone, and the oocyst itself is hard to detect on food even when investigators know exactly where to look. That’s most of why this season, like most Cyclospora seasons, is landing without a single, obvious recall notice to point patients to.

Now remember,  this isn’t Giardia. Even though the two get confused constantly and both cause watery diarrhea traced back to contaminated food or water. Giardia shows up on a routine stool antigen test or standard multiplex panel without any special request. Cyclospora doesn’t.

Does Washing Produce Protect Against Cyclospora?

No, and this is the myth worth correcting every single time it comes up. Washing produce under the tap, even scrubbing it, does not reliably remove Cyclospora oocysts.⁴ Standard chlorine-based sanitizers, the same ones that work fine against most bacteria on fresh produce, don’t reliably inactivate this oocyst either. The only thing that reliably kills it is heat: cooking, boiling, baking.

That’s worth really communicating to a worried patient, because the instinct is to blame their own kitchen habits. They didn’t wash carelessly. The oocyst gets onto produce in the field or in irrigation water, well before anyone in their house ever touched it, and no amount of rinsing at home was going to undo that. This is a supply chain and traceback problem, not a hygiene-compliance problem, and patients need to hear that distinction instead of walking away thinking they did something wrong.

What About Person-to-person Spread?

The second myth is about who else in the house is at risk. Direct person-to-person spread is unlikely, and the reason is mechanical: the oocysts shed in a bowel movement aren’t infectious yet. They need roughly one to two weeks outside the body to sporulate before they can infect anyone else.⁵ A parent with cyclosporiasis is not a transmission risk to their kids the way a parent with norovirus is. The exposure that mattered already happened, probably at a meal everyone ate together, which is why cases often cluster by household without any household member infecting another.

The Symptom Pattern That Gets Mistaken for Recovery

Watery diarrhea is the leading symptom, often profuse and explosive enough that patients bring it up before you even ask. Most also report cramping, nausea, low-grade fever, and a fatigue that feels disproportionate to the diarrhea itself. Anorexia and real weight loss show up often enough to ask about directly. Blood or mucus in the stool is less common, and when it shows up, it’s worth considering whether something else, on top of the Cyclospora, is also going on.

The detail that matters most clinically is the shape of the illness, not just the symptom list. Left untreated, cyclosporiasis can run for weeks to months,⁶ and it rarely runs in a straight line. Some patients get a single, self-limited stretch that resolves on its own. Many more get a waxing-and-waning course: a few days of feeling noticeably better, then a relapse that brings the diarrhea and fatigue right back. That pattern is exactly what makes this so easy to write off. A patient who feels better on day ten looks recovered. A patient who’s still cramping on day twenty-five gets told it’s probably just taking longer than usual, or that it’s turned into post-infectious IBS. Neither read is wrong often enough to catch, because the actual explanation, an active infection nobody tested for, isn’t on either differential.

Watch this more closely in infants, older adults, and immunocompromised patients, where the same illness runs harder: more dehydration, more real malnutrition risk, and a rare but real mortality risk in the most vulnerable of that group.⁶

Does a Stool Culture or Routine O&P Detect Cyclospora?

Short answer: not reliably. Don’t assume a standard panel catches it.

A routine ova and parasite exam uses wet-mount and trichrome stains that Cyclospora oocysts don’t take up well.⁷ The organism can be there and still go unseen, or show up faint enough to write off as debris. Finding it reliably takes a stain built for this organism specifically, a modified acid-fast stain or a safranin stain, and neither is standard on a routine O&P order. It has to be requested by name.

Multiplex PCR panels solve part of the problem, but only if Cyclospora is actually on the panel. Coverage varies by manufacturer, and plenty of the GI panels in wide clinical use don’t include it as a target at all.⁷ Before trusting a negative PCR, confirm Cyclospora was actually one of the organisms that panel was built to detect.

Then there’s shedding. Patients don’t shed oocysts in every bowel movement, so a single specimen, even with the right stain or the right panel, can come back falsely negative.⁸ Microscopy-based testing typically needs specimens collected on separate days to be reliable; a targeted PCR is more forgiving and can often catch it from one well-timed sample. A patient with three weeks of symptoms and one negative stool study hasn’t been ruled out. They’ve had one attempt at the wrong test, or one attempt at the right test on an unlucky day.

Quick Reference: Ordering for Cyclospora

  • Test to order: modified acid-fast stain or safranin stain on microscopy, or a GI multiplex PCR panel confirmed to include Cyclospora as a named target.
  • Why routine testing misses it: standard O&P wet-mount and trichrome stains don’t reliably visualize the organism, and not every PCR panel tests for it.
  • If microscopy is negative: don’t stop at one sample. CDC recommends three or more specimens spaced 2 to 3 days apart before ruling it out.
  • If PCR is negative: confirm Cyclospora was actually on that panel. If it was, one well-timed sample is usually sufficient.

Cyclosporiasis Treatment: TMP-SMX Dosing, and What to Do for the Sulfa-Allergic Patient

Trimethoprim-sulfamethoxazole is first-line, and for most adults it works well. The standard course is one double-strength tablet (TMP 160mg/SMX 800mg) by mouth, twice a day, for seven to ten days.⁹ Most patients start feeling meaningfully better within the first few days. Patients with HIV may need a longer course to fully clear it.

The sulfa-allergic patient is the real open problem in this article, and it deserves a straight answer instead of a reassuring one. CDC’s own language here is blunter than most clinicians expect: no highly effective alternative to TMP-SMX has been identified.¹⁰ Ciprofloxacin gets reached for first, but the evidence behind it is thin. One small study in HIV-positive patients in Haiti showed modest activity, and against that sits a lot of anecdotal clinical experience suggesting it just doesn’t work well in immunocompetent patients. Nitazoxanide gets prescribed too, and it’s also less effective than TMP-SMX where it’s actually been studied.

So what do you actually do? For a patient who’s truly sulfa-allergic, CDC lists three real paths, not two backup drugs to cycle through: observation with symptomatic treatment while the infection runs its course, a trial of one of the less-proven antibiotics with the patient told upfront that it may not work, or referral for TMP-SMX desensitization. Desensitization doesn’t come up enough in conversations about this parasite, and it’s worth having in your back pocket for the patient who needs a real cure and can’t take the drug that reliably delivers one.

What to Tell Your Patient

First, washing all produce helps in general, just not with this one specific parasite. It’s not their fault, and it’s not a reason to scrub harder next time.

Second, they’re not about to infect the rest of the household. The exposure already happened, probably at a shared meal, and there’s nothing contagious about sitting next to them at dinner tonight.

If a stomach bug has dragged on more than a week or two, especially with cramping, fatigue, or weight loss that won’t quit, that’s not “give it more time” anymore. That’s “ask whether anyone’s tested specifically for a parasite.”

The Bottom Line

Cyclospora cayetanensis is having a real season, and the headlines are outrunning what’s actually confirmed about it. That part will sort itself out as the traceback investigations close.

What won’t sort itself out on its own is the diagnostic habit. A routine O&P or an untargeted GI panel can come back clean and still miss this. If a patient has weeks of watery diarrhea, cramping, and fatigue that won’t resolve, name the test: modified acid-fast stain, or a PCR panel confirmed to include Cyclospora. Treat with TMP-SMX first. And if the patient’s allergic to it, know going in that the backup options are weak, so observation, a documented trial of a less-proven drug, or desensitization done through an allergist, and only for patients without a life-threatening allergy, are the real conversation…. not a quick swap to ciprofloxacin and moving on.

That’s the difference between a case that resolves in a week and one that drags on for a month before anyone catches it.

Sources

  1. CDC statement that there is no evidence of a single Cyclospora outbreak linking current cases, several clusters remain under separate traceback investigation, as reported by CBS News Texas, July 2026: https://www.cbsnews.com/texas/news/cyclosporiasis-texas-diarrhea-2026-cdc/
  2. CDC, Clinical Overview of Cyclosporiasis: seasonality varies by setting and is not fully understood: https://www.cdc.gov/cyclosporiasis/hcp/clinical-overview/index.html. CDC, U.S. Foodborne Outbreaks of Cyclosporiasis, 2000–2017: past outbreaks have been linked to fresh produce including cilantro, basil, raspberries, snow peas, and bagged salad mixes: https://stacks.cdc.gov/view/cdc/118740 
  3. CDC, Clinical Overview of Cyclosporiasis: incubation period averages one week, ranging from 2 days to 2 weeks or more: https://www.cdc.gov/cyclosporiasis/hcp/clinical-overview/index.html
  4. FDA, Cyclosporiasis and Fresh Produce: standard washing and chlorine-based sanitizing do not reliably remove or kill Cyclospora oocysts; only cooking reliably inactivates them: https://www.fda.gov/food/foodborne-pathogens/cyclosporiasis-and-fresh-produce
  5. CDC, About Cyclosporiasis: oocysts require roughly 1 to 2 weeks outside the body to become infectious, so direct person-to-person transmission is unlikely: https://www.cdc.gov/cyclosporiasis/about/index.html
  6. Mathison and Pritt, “Cyclosporiasis—Updates on Clinical Presentation, Pathology, Clinical Diagnosis, and Treatment,” Microorganisms (2021): untreated illness may last weeks to months with a relapsing-remitting course, and runs more severe in infants, older adults, and immunocompromised patients: https://pmc.ncbi.nlm.nih.gov/articles/PMC8471761/ 
  7. CDC, DPDx Cyclosporiasis: routine wet-mount, trichrome, and Giemsa stains are not adequate for reliable detection; modified acid-fast or safranin stains are required, and not all commercial multiplex PCR panels include Cyclospora as a target: https://www.cdc.gov/dpdx/cyclosporiasis/index.html
  8. CDC, DPDx Cyclosporiasis: oocysts are shed intermittently and in low numbers, so a single negative specimen does not rule out infection; three or more specimens at 2- to 3-day intervals may be required: https://www.cdc.gov/dpdx/cyclosporiasis/index.html
  9. CDC, Clinical Care of Cyclosporiasis: TMP-SMX dosing of one double-strength tablet twice daily for 7 to 10 days in adults, with longer courses considered for patients with HIV: https://www.cdc.gov/cyclosporiasis/hcp/clinical-care/index.html
  10. CDC, Clinical Care of Cyclosporiasis: no highly effective alternative to TMP-SMX has been identified; options for sulfa-allergic patients include observation with symptomatic care, an alternative antibiotic supported by limited data, or TMP-SMX desensitization for selected, allergist-evaluated patients without a life-threatening allergy: https://www.cdc.gov/cyclosporiasis/hcp/clinical-care/index.html. The ciprofloxacin data point traces to a 2000 randomized trial in 42 HIV-infected patients in Port-au-Prince, Haiti: TMP-SMX outperformed ciprofloxacin, 95% versus 70% negative stool tests by day 7 (Annals of Internal Medicine, 2000): https://pubmed.ncbi.nlm.nih.gov/10836915/. Nitazoxanide as a sulfa-allergy alternative, with the caveat that treatment failure may occur, is per Mathison and Pritt (Source 6).

 

Lifesaving Solutions

Everyone should be empowered to care for themselves and their loved ones during the unexpected. Check out our recent lifesaving products today.
Learn More

Recent Posts

Keeping you informed and safe.

For Clinicians | MenACWY vs MenB

For Clinicians | MenACWY vs MenB

For Clinicians | MenACWY vs MenB A Back-to-School Meningococcal Vaccine Refresher By Dr. Jamie Wilkey, PharmD — Director of Clinical Strategy, JaseMedically reviewed and edited by Kristen Carpenter, PA-C Fall is coming, and with that are newly minted college students...

read more
For Clinicians | Strep Throat vs. Sore Throat

For Clinicians | Strep Throat vs. Sore Throat

For Clinicians | Strep Throat vs. Sore Throat Do You Need Antibiotics? By Dr. Jamie Wilkey, PharmD — Director of Clinical Strategy, JaseMedically reviewed and edited by Kristen Carpenter, PA-C Most sore throats don't need an antibiotic. Most of us already know that....

read more
View Other Blog Posts

Join Our Newsletter

Our mission is to help you be more medically prepared. Join our newsletter and follow us on social media for health and safety tips each week!

For Clinicians | The Tooth Infection at Your Counter

couple looking at computer asking questions

For Clinicians | The Tooth Infection at Your Counter:


What to Do When the Dentist Is Days Away

By Dr. Jamie Wilkey, PharmD — Director of Clinical Strategy, Jase
Medically reviewed by Kristen Carpenter, PA-C — Clinical Advisory Board Member

Almost none of us trained to manage a tooth. I know I sure didn’t as a pharmacist. Yet the tooth finds us anyway. It’s the patient at the pharmacy counter asking which antibiotic works for a throbbing molar (as if they had access to the antibiotic even if I told them). It’s the primary care visit that turns out to be a three-day toothache. It’s the roughly two million dental visits to US emergency departments every year, most of which end the same way: an antibiotic, something for the pain, and a referral to a dentist the patient still has to go find.

So this is the dental guidance most of us never got in our professional schooling. Not how to do the dentistry, but what to actually say and prescribe in the gap: which toothaches are emergencies and which aren’t, what antibiotics genuinely do for an infected tooth, and what the right move is when the patient in front of you can’t get to a dentist for days. It turns out the clinical answer runs almost opposite to what the search results promise, and it starts with a piece of anatomy. Let’s jump into that, shall we?

Why can’t antibiotics just fix the tooth?

By the time a tooth is infected enough to hurt like that, the pulp inside it is usually dead. Dead tissue has no blood supply. And no blood supply means no delivery route: the antibiotic circulating through the patient’s bloodstream physically cannot reach the bacteria walled up inside that tooth. You can run a full course and the source sits there untouched.

So the thing that actually cures a tooth infection isn’t a drug at all. It’s source control: draining the abscess, opening the tooth, a root canal, or pulling it. Mechanical, not pharmacologic. The dentist isn’t the backup plan when antibiotics fail; the dentist is the treatment. Antibiotics do one useful job in the meantime: they hold back a spreading infection and buy time. They are the bridge, not the destination.

This is exactly why the American Dental Association, in its 2019 guideline, tells dentists not to prescribe antibiotics for most toothaches. Not to conserve them, though that matters too, but because for a garden-variety symptomatic tooth they mostly don’t work as the patient imagines. The search results promising an antibiotic that will “save your life” from a tooth infection have the mechanism backwards. The antibiotic buys the time. The dental chair saves the tooth.

So when ARE antibiotics indicated?

The 2019 ADA guideline draws the line at the patient’s body, not the tooth. For a healthy adult with a symptomatic tooth and no systemic signs, the recommendation is no antibiotic. Refer for dental treatment, and manage the pain in the meantime. And the pain tool that actually works here is not an opioid: 400 to 600 mg of ibuprofen combined with 1000 mg of acetaminophen outperforms both, and outperforms most opioid combinations, for acute dental pain. Worth having at ready a patient in dental agony begs to know from you what to take.

Antibiotics enter when the infection stops being local. Two triggers: systemic involvement (fever, malaise, the look of someone whose infection has left the tooth), or the access situation where definitive dental care simply isn’t reachable in a useful timeframe. Hang on that second one; it’s the whole back half of this article.

The signs that mean escalate now, not tomorrow are: fever, swelling that’s spreading toward the eye or down into the neck, and any trouble swallowing or breathing. That last cluster is how a tooth becomes Ludwig’s angina, a deep neck-space infection that can close off an airway. It’s rare, and it still kills roughly 8% of the people who develop it. Most toothaches are nowhere near this. But the patient can’t tell the difference on their own, and that triage line is the single most useful thing we hand them.

Dentistry has a stewardship problem, and you’re standing in it

Dentists write roughly one in ten of all outpatient antibiotic prescriptions in this country, about 25 million courses a year. And after the 2019 guideline told them to prescribe less, the volume barely moved. Antibiotics still show up in 12 to 28% of visits for the exact acute infections that mostly shouldn’t get them, from irreversible pulpitis to apical abscess, and when they are prescribed the course runs eight days or longer nearly half the time. On the prophylaxis side, the “premedicate before the cleaning” scripts, more than 80% don’t match current guidance at all.

The single best stewardship tool for a tooth is the procedure: drain it, open it, pull it, and the antibiotic becomes unnecessary. Non-dentists can’t do the procedure. No way! Which means when the tooth shows up at the pharmacy counter or the urgent care, the stewardship move isn’t a better antibiotic choice. It’s the triage from the last section: is this local or systemic, and is the patient actually on a path to a dentist, or are we about to write a course that becomes the treatment plan by default?

That default is the trap. An antibiotic handed over without a dental appointment behind it doesn’t buy time toward a fix; it just postpones the same infection, minus a few days of the drug’s usefulness against everything else the patient carries. The bacteria in the tooth recolonize the moment the course ends, because, again, the source was never touched. So the stewardship question at our counter is less “which drug” and more “what is this drug bridging to.” If the answer is nothing, the prescription isn’t stewardship. It’s a delay with side effects.

So what about when there’s no dentist to bridge to?

This is the second trigger from earlier, and it’s the one the guideline names but never develops. The ADA’s own language reserves antibiotics for systemic signs or for when definitive dental treatment is not available. That second clause is doing non-obvious work. It’s the guideline admitting that access, not just biology, decides whether a drug is appropriate.

And access fails in ordinary ways. A molar goes bad on day two of a cruise. A crown cracks on a Friday night heading into a holiday weekend. A patient is three hours from the nearest dentist taking new patients, or on an international trip where the local pharmacy stock is counterfeit or degraded. In every one of these, the bridge has somewhere to go, it’s just days out instead of hours. This is exactly where a course of antibiotics does the job we described: holding a spreading infection in check until the chair is reachable.

Notice this is the same logic as any standby antibiotic. Resistance is driven by how antibiotics are used, not by whether a patient keeps a course on a shelf. A well-chosen drug, matched to a condition the patient can actually recognize, held for the moment access disappears, is not the thing that breeds resistance. Misuse is. Advance provision has been standard wherever access is the binding constraint long before we came along: ships carry antibiotics for crew with no physician aboard, and expedition medicine sends them where evacuation is days away.

The boundary matters as much as the case. This is for the recognizable dental infection when a dentist is genuinely out of reach. It is not for the vague ache the patient could get seen for on Monday, and it is never a reason to skip the dentist once one is reachable. The drug buys the trip to the chair. It does not replace it.

The grey space, and the kit we built for it

Right now the tooth gets all-or-nothing care. Either the patient reaches a dentist while it still matters, or they’re left with a search bar and whatever’s in the cabinet. There’s no sanctioned middle: no clinician-built step that readies someone for the one dental problem they can actually recognize, before access fails. That gap is where we work, and we call the category by name on purpose: appropriate medical preparation. The right drug, a real indication, clear instructions, prescribed ahead of the moment access disappears.

The Jase dental kit is that idea made concrete. A licensed provider prescribes it before the trip or the storm: the antibiotic clinicians reach for in dental infections, a prescription anti-inflammatory for the pain, and a topical numbing gel for adults, with condition cards that spell out dosing and what each medication is for. It’s the office and the pharmacy, packed for the patient before the molar goes bad three time zones from home.

A note on the pain side, because it matters at the counter: the kit’s anti-inflammatory is celecoxib, a prescription NSAID, but the combination that actually tops the evidence for dental pain, ibuprofen plus acetaminophen, is over the counter and already sitting in most medicine cabinets. Point patients there first for the pain itself, no prescription needed. Celecoxib is the option for those who can’t take standard NSAIDs or want once-daily dosing.

We hold this to the same bar we’d hold any standby course. Right drug, chosen deliberately. A documented indication, not “antibiotics, just in case.” Dosing and duration set by the prescriber, never self-terminated when the pain eases. And clear direction back to a clinician. That’s the part we keep sharpening, and it’s the part that separates preparation from a leftover stash. The kit is the bridge. The dentist is still the cure.

The bottom line

Antibiotics don’t cure a tooth infection; a dentist does, because the source is walled off from the bloodstream. Most toothaches aren’t emergencies, and the triage line (fever, spreading swelling, trouble swallowing or breathing) is the most useful thing we hand a patient. At the counter, the real stewardship question isn’t which antibiotic, it’s what the antibiotic is bridging to. And when the answer is a dentist who’s genuinely days away, a well-chosen course prescribed ahead of time is preparation, not excess. For the patients you’d rather not manage in this grey space yourself, send them to us at Jase.com.

Sources

  1. Lockhart PB, Tampi MP, Abt E, et al. Evidence-based clinical practice guideline on antibiotic use for the urgent management of pulpal- and periapical-related dental pain and intra-oral swelling. J Am Dent Assoc. 2019;150(11):906-921.e12. (Recommends against antibiotics for immunocompetent adults; reserves them for systemic involvement or when timely definitive dental treatment is unavailable; NSAID dosing of 400-600 mg ibuprofen plus 1000 mg acetaminophen.) https://pmc.ncbi.nlm.nih.gov/articles/PMC8270006/
  2. American Dental Association. Antibiotics for Dental Pain and Swelling (public guideline summary). https://www.ada.org/resources/research/science/evidence-based-dental-research/antibiotics-for-dental-pain-and-swelling
  3. Cackley AP, et al. Emergency Department Visits for Tooth Disorders: United States, 2020-2022. CDC NCHS Data Brief No. 531, June 2025. (An annual average of 1,944,000 ED visits for tooth disorders.) https://www.cdc.gov/nchs/products/databriefs/db531.htm
  4. Huynh CVT, Gouin KA, Hicks LA, et al. Outpatient antibiotic prescribing by general dentists in the United States from 2018 through 2022. J Am Dent Assoc. 2025. (Dentists wrote 9.8%-12.1% of outpatient antibiotics; 25.17 million prescriptions in 2022; volume stable after the 2019 guideline.) https://pmc.ncbi.nlm.nih.gov/articles/PMC12058375/
  5. Carlsen DB, et al. Concordance of Antibiotic Prescribing with the American Dental Association Acute Oral Infection Guidelines within Veterans Affairs Dentistry. Infect Control Hosp Epidemiol. 2021. (Antibiotics given in 12% of irreversible pulpitis, 17% of apical periodontitis, and 28% of acute apical abscess visits; prolonged courses of 8+ days in 42-49%.) https://pmc.ncbi.nlm.nih.gov/articles/PMC8410877/
  6. Suda KJ, Calip GS, Zhou J, et al. Assessment of the Appropriateness of Antibiotic Prescriptions for Infection Prophylaxis Before Dental Procedures, 2011 to 2015. JAMA Netw Open. 2019. (80.9% of dental antibiotic prophylaxis prescriptions were unnecessary.) https://pmc.ncbi.nlm.nih.gov/articles/PMC6547109/
  7. Cleveland Clinic. Ludwig’s Angina. (Deep neck-space infection, most often from lower molars; roughly 8% of those who develop it die.) https://my.clevelandclinic.org/health/diseases/23457-ludwigs-angina

 

Lifesaving Solutions

Everyone should be empowered to care for themselves and their loved ones during the unexpected. Check out our recent lifesaving products today.
Learn More

Recent Posts

Keeping you informed and safe.

For Clinicians | MenACWY vs MenB

For Clinicians | MenACWY vs MenB

For Clinicians | MenACWY vs MenB A Back-to-School Meningococcal Vaccine Refresher By Dr. Jamie Wilkey, PharmD — Director of Clinical Strategy, JaseMedically reviewed and edited by Kristen Carpenter, PA-C Fall is coming, and with that are newly minted college students...

read more
For Clinicians | Strep Throat vs. Sore Throat

For Clinicians | Strep Throat vs. Sore Throat

For Clinicians | Strep Throat vs. Sore Throat Do You Need Antibiotics? By Dr. Jamie Wilkey, PharmD — Director of Clinical Strategy, JaseMedically reviewed and edited by Kristen Carpenter, PA-C Most sore throats don't need an antibiotic. Most of us already know that....

read more
View Other Blog Posts

Join Our Newsletter

Our mission is to help you be more medically prepared. Join our newsletter and follow us on social media for health and safety tips each week!

For Clinicians | Protest First Aid: Tear Gas, Pepper Spray, and Crowd Injury Basics

couple looking at computer asking questions

For Clinicians | Protest First Aid 


Tear Gas, Pepper Spray, and Crowd Injury Basics

By Dr. Jamie Wilkey, PharmD — Director of Clinical Strategy, Jase
Medically reviewed and edited by Aaron Asay, PA-C, DMSc, FIBODM, FAWM

Protests are a part of life around the world, and this summer they are a large part of life here: on single days this year, organizer estimates put several million Americans in the streets. That means our patients are in those crowds, near those crowds, or raising kids who are headed to one. Whether someone marches on purpose or catches a drift of tear gas at a bus stop, the medicine is identical. And I don’t know about you, but this is medicine I never actually learned in my professional program. Pepper spray, tear gas, rubber bullets, crush injuries, and heat all have first aid, and right now the best available guidance is written by street medics and tactical gear companies instead of by us. Today we’re covering the clinical version: what actually works, what is myth, which injuries need real evaluation, and the two-minute pep talk worth giving any patient who brings up that they will be near a protest anytime soon.

What actually treats tear gas and pepper spray exposure?

Before we talk treatment, scene safety comes first. If crowd movement, violence, or ongoing deployment of crowd-control agents makes the area unsafe, leaving the scene is the first intervention. Trauma priorities come next: serious bleeding or trouble breathing outranks any chemical exposure. And anyone providing aid should use appropriate PPE for the anticipated environment: nitrile gloves for providing aid, eye protection when feasible, sturdy closed-toe footwear, and hearing protection in situations where crowd-control munitions or explosive noise are possible.

Once the patient is somewhere safe, the short answer is: fresh air and water, in that order. The first move is out of the cloud, upwind, somewhere air is moving, and no rubbing: the agent is on their hands, and eyes are where it wants to go. Contact lenses come out and go in the trash. They trap the agent against the cornea, and rinsing over the top of them accomplishes very little. Then irrigation, 15 to 20 minutes with water or normal saline, per the American Academy of Ophthalmology’s clinical statement on ocular exposure to pepper spray and tear gas from February of this year.¹ Exposed skin gets soap and water; skip the lotions and creams afterward, since they trap residue against the skin. Refer anyone with persistent symptoms, reduced visual acuity, or anything that suggests corneal damage.The eyes get the headlines, but these agents are respiratory irritants too. Most exposures cause cough, chest tightness, and burning in the nose and throat that settle within about half an hour of reaching fresh air.⁶ The exception is reactive airway disease: patients with asthma, COPD, or chronic bronchitis can tip into a true exacerbation. Most clinicians will never see a severe riot control agent exposure, so the escalation criteria are worth committing to memory: persistent hypoxia, worsening bronchospasm despite rescue medication, inability to speak normally, stridor, or altered mental status. Those distinguish a routine irritant exposure from a patient who needs a higher level of care.

Now the myths, because your patients have seen the photos of people getting milk poured across their faces, and a lot of them believe that’s the treatment.

  • Milk: comparative trials show no advantage over water for pepper spray pain, and milk is not sterile.² It has no business in anyone’s eye.
  • Baby shampoo mixes: a randomized trial found no benefit over water alone, and the AAO explicitly declines to endorse it.³
  • Antacid solutions (the half-Maalox, half-water spray bottles from the street medic playbook): same story, no demonstrated advantage over plain water.²
  • Vinegar: this one comes with a story from this article’s reviewer. Aaron was tear gassed countless times as a bystander at protests while living in Venezuela several years ago, and resorted to carrying a small bottle of vinegar everywhere because it took the sting out of breathing (he and his companions doused their ties in it). No change to morbidity or mortality, but it sure felt like it made the symptoms tolerable. That’s the right frame for most folk remedies: comfort, maybe, but not treatment, and no substitute for fresh air and irrigation.

And remember, tear gas is not a gas. CS and OC agents are aerosolized particulates that settle into hair, skin, and clothing and keep re-exposing the patient, and everyone who hugs them at home, until the clothes come off and the shower happens.⁴ Rinsing the eyes at the scene treats the eyes. It does not decontaminate the person. The home half of the advice is simple: clothes off at the door and washed separately, shower with soap, hair included.

And one decontamination note for our side of the counter: a contaminated patient who walks into a pharmacy, clinic, or emergency department brings the agent along, and staff can develop symptoms from clothing residue alone. If someone arrives straight from an exposure, decontamination comes before the waiting room, not after.

The two-minute pep talk for a patient headed to a protest

Here’s what’s strange about this topic: the information exists, it just wasn’t written for us. On one side are the street medics: volunteers who train each other, sometimes through twenty-hour courses, and who genuinely know their decontamination and scene safety.⁵ Their material is solid, but it’s written by activists, for activists. On the other side are tactical gear companies selling trauma kits with a side of fear. When your patient searches “protest first aid kit” tonight, those are the two voices they will find. What’s missing is the neutral clinical layer, the version a family clinician or a pharmacist would actually give. So here is one.

We already have the muscle for this. It’s anticipatory guidance, the same thing we do for international travel: we don’t weigh in on whether the trip is a good idea, we make sure the patient comes home healthy. A patient who mentions an upcoming protest is handing you the same opening. The whole talk fits in two minutes:

  • Bring your critical medications, especially the rescue inhaler. Crowd-control agents are respiratory irritants, and reactive airway disease is the one condition that can turn a self-limiting exposure into something dangerous.⁶ Add glucose for anyone on insulin or a sulfonylurea, and a dose of anything critical in case getting home takes hours longer than planned.
  • Carry a medication list on paper. Phones die on long days, and a card in a pocket answers the questions a stranger or a medic will need answered.
  • Wear glasses, not contact lenses. Lenses trap chemical agents against the cornea, and nobody wants to be doing lens removal with contaminated fingers on a sidewalk.
  • Carry more water than seems reasonable. It covers heat and dehydration, and it doubles as eye irrigation, which as we just covered is the actual treatment.

And we’ve got to talk about the blazing heat, because at any large summer gathering it causes more medical trouble than anything else on this list. A demonstration is a long outdoor event with dense crowds, limited shade, adrenaline, and no easy way to leave, which is a reasonable recipe for heat exhaustion. The advice here is pretty simple: water before thirst, shade breaks, and treat dizziness, nausea, or confusion as a reason to get out of the crowd now rather than after the speeches. One clinical layer worth adding: patients on diuretics, stimulants, anticholinergics, or antipsychotics run hotter than they realize, and they are exactly the ones who won’t connect their med list to the weather forecast.

The pharmacology refresher here for the ‘why’ these meds promote hyperthermia is this: diuretics start the day volume-depleted, anticholinergics switch off sweating, which is the body’s main radiator, stimulants generate extra metabolic heat, and antipsychotics blunt the hypothalamic thermostat that would normally sound the alarm. Less sweat, more heat, and a later warning.

One final consideration is risk stratification, because the crowds this summer are not all twenty-five-year-olds. Patients with significant cardiopulmonary disease, pregnancy, advanced age, or limited mobility may require more individualized counseling based on their ability to tolerate respiratory irritants, heat, prolonged standing, or rapidly changing crowd conditions. For some, the discussion may shift from what to bring to whether attending is medically advisable at all.

How dangerous are rubber bullets, really?

More dangerous than the name wants you to think. “Less lethal” is a comparison to live ammunition, not a safety rating. The best evidence we have is a 2017 systematic review in BMJ Open covering kinetic impact projectiles (rubber bullets, beanbag rounds, and their cousins) in crowd-control settings from 1990 to 2017: at least 53 deaths, some 300 people left with permanent disability, and 71% of the 2,135 documented survivor injuries were severe.⁷ Head and neck strikes did the worst of it, accounting for roughly half the deaths and more than 80% of the permanent disabilities.

Our smarty pants exam-room translation: location is the triage. A projectile impact to the head, neck, chest, or abdomen deserves prompt medical evaluation, with imaging guided by the clinical examination and mechanism of injury. Anything near the eye goes to ophthalmology the same day. The bruise on the thigh can usually be a bruise on the thigh. 

Crowd compression deserves its own section, because it is often overlooked. People die all the time in mob crushes, and it’s likely a significant injury if a patient comes out of a stampede alive. Patients who have been pinned or compressed may develop occult thoracic injuries, delayed respiratory compromise, compartment syndrome, rhabdomyolysis, or crush syndrome after prolonged entrapment. None of those announce themselves at the scene: chest pain, worsening shortness of breath, escalating limb pain or swelling, or dark urine in the hours or days afterward means evaluation, not watchful waiting. And the advice Aaron gives his own patients is worth two sentences of anyone’s pep talk: consider a crowd like a river. Go with the flow, and angle to a side to find an avenue of escape, like a doorway, alley, or street, then get as far from the mob as possible.

Bleeding is the one place where the layperson layer already exists, and it’s good. Stop the Bleed came out of the American College of Surgeons’ Hartford Consensus work and teaches direct pressure, wound packing, and tourniquet use in a course that takes about an hour.⁸ It treats bystanders as immediate responders instead of spectators, which is exactly the right frame. If a patient wants one concrete thing to do beyond the pep talk, point them there. It’s the only part of this whole topic that already comes in an ordinary-citizen version.

Quick reference

  • Scene safety first: if the area is unsafe, leaving is the first intervention. Trauma priorities before decontamination.
  • Chemical exposure (tear gas, pepper spray): fresh air first, no eye rubbing, contact lenses out and discarded, irrigate eyes 15 to 20 minutes with water or saline, soap and water for skin. Refer for persistent symptoms, reduced acuity, or suspected corneal damage. Emergency evaluation for persistent hypoxia, worsening bronchospasm despite rescue medication, inability to speak normally, stridor, or altered mental status.
  • Projectile impact: head, neck, chest, abdomen, or eye means prompt medical evaluation, with imaging guided by the clinical examination and mechanism of injury. Eye strikes go to ophthalmology.
  • Crowd compression: pinned or caught in a surge means evaluation, not watchful waiting. Watch for delayed chest pain, breathing trouble, limb pain or swelling, or dark urine in the hours to days afterward.
  • Heat: dizziness, nausea, or confusion means out of the crowd, cooling, and fluids.
  • Bleeding: direct pressure, wound packing, tourniquet if trained. Stop the Bleed courses teach all three in about an hour.
  • At home afterward: clothes off at the door and washed separately, shower with soap, hair included. Contaminated patients decontaminate before the waiting room, not after.

The missing middle layer

Notice where everything in this article came from. The eye protocol is from a statement written for ophthalmologists. The projectile numbers are from a review written for policy researchers. The decontamination habits are from street medics. All of it useful, none of it written for the exam room, the pharmacy counter, or the patient standing at either one. That’s the pattern we keep running into at Jase: when the question is how to get ready for predictable medical trouble, care today is all or none. Either your patient reaches a professional in time, or they’re on their own with whatever the search results serve up, milk bottles and all.

Appropriate medical preparation is the name we’ve given that missing middle layer: the bounded, clinician-built work of getting ready before the bad day instead of during it. Most of our work is on the medication side, and if the pep talk surfaces that a patient has no plan for their critical medications, that part you can hand to us at Jase.com. The rest we publish in the open, every week, articles like this one included, so the neutral clinical version of these answers exists and none of us has to improvise it. None of it replaces anyone’s doctor, and it isn’t meant to. A water bottle, a paper med list, and a two-minute conversation are complements to care, not substitutes for it.

The bottom line

Protests are not going away, and neither is the medicine around them. Water and time for the chemical agents. Location as triage for the impacts. Clothes off and a shower at home. A rescue inhaler in the pocket where it belongs, and a pep talk that takes two minutes to give. None of this requires new training or a single piece of gear, just someone in the room who thought about it ahead of time. As of today, that’s you.

Sources

  1. American Academy of Ophthalmology. Ocular Exposure to Pepper Spray and Tear Gas: Evaluation and Management. Clinical statement, February 2026. https://www.aao.org/education/clinical-statement/ocular-exposure-to-pepper-spray-tear-gas-evaluatio
  2. A randomized controlled trial comparing treatment regimens for acute pain for topical oleoresin capsaicin (pepper spray) exposure in adult volunteers. Prehospital Emergency Care. 2008;12(4). Compared Maalox, 2% lidocaine gel, baby shampoo, milk, and water; no significant difference between regimens. https://pubmed.ncbi.nlm.nih.gov/18924005/
  3. Baby Shampoo to Relieve the Discomfort of Tear Gas and Pepper Spray Exposure: A Randomized Controlled Trial. Western Journal of Emergency Medicine. 2018;19(2). https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5851502/
  4. Centers for Disease Control and Prevention. Facts About Riot Control Agents. https://www.cdc.gov/chemical-emergencies/chemical-fact-sheets/riot-control-agents.html. See also: Tear Gas and Pepper Spray Toxicity. StatPearls. https://www.ncbi.nlm.nih.gov/books/NBK544263/
  5. Atlanta Resistance Medics. How to Organize a 20-Hour Street Medic Training. https://www.atlantaresistancemedics.org/street-medic-training/
  6. Tear Gas and Pepper Spray Toxicity. StatPearls. Respiratory symptoms are mostly self-limited; patients with asthma, emphysema, or bronchitis may present with acute exacerbation. https://www.ncbi.nlm.nih.gov/books/NBK544263/
  7. Haar RJ, et al. Death, injury and disability from kinetic impact projectiles in crowd-control settings: a systematic review. BMJ Open. 2017;7(12):e018154. https://pubmed.ncbi.nlm.nih.gov/29255079/
  8. American College of Surgeons. STOP THE BLEED. https://www.stopthebleed.org/
  9. No Kings protests. Britannica. Organizer-estimated 8 to 9 million participants across roughly 3,300 events, March 28, 2026. https://www.britannica.com/event/No-Kings-protests

 

Lifesaving Solutions

Everyone should be empowered to care for themselves and their loved ones during the unexpected. Check out our recent lifesaving products today.

Learn More

Recent Posts

Keeping you informed and safe.

For Clinicians | MenACWY vs MenB

For Clinicians | MenACWY vs MenB

For Clinicians | MenACWY vs MenB A Back-to-School Meningococcal Vaccine Refresher By Dr. Jamie Wilkey, PharmD — Director of Clinical Strategy, JaseMedically reviewed and edited by Kristen Carpenter, PA-C Fall is coming, and with that are newly minted college students...

read more
For Clinicians | Strep Throat vs. Sore Throat

For Clinicians | Strep Throat vs. Sore Throat

For Clinicians | Strep Throat vs. Sore Throat Do You Need Antibiotics? By Dr. Jamie Wilkey, PharmD — Director of Clinical Strategy, JaseMedically reviewed and edited by Kristen Carpenter, PA-C Most sore throats don't need an antibiotic. Most of us already know that....

read more
View Other Blog Posts

Join Our Newsletter

Our mission is to help you be more medically prepared. Join our newsletter and follow us on social media for health and safety tips each week!