Medical Preparation 101 for Seniors: What Happens If You Can’t Get Your Medications

Medical Preparation 101 for Seniors: What Happens If You Can’t Get Your Medications

You’re on Medications Now. Here’s What Happens If You Can’t Get Them

By Cayla McGrath

This is the conversation that’s happening on the pickleball court, on the deck of a cruise ship, at dinner with friends your age. Not in a panicked way — more like the math you run in the back of your head that you don’t always say out loud.

What if I can’t get this medication? What if there’s a disaster, a supply chain issue, a pharmacy that closes, a weekend when I can’t reach anyone? Two years ago, you didn’t take anything. Now you take three things you can’t skip.

That’s what makes this a different conversation than the one your 35-year-old kids are having about emergency preparedness. They’re thinking about water and a go-bag. You’re thinking about the lisinopril, the levothyroxine, and the statin, and what happens if those stop.

Here’s the honest answer — and it’s more manageable than the question implies.

Layer one: the prescriptions you already take

The single most useful thing you can do right now: ask your prescriber and pharmacy for 90-day fills on every stable chronic medication.

For most people on stable, long-term medications, this is an easy yes. It means less time at the pharmacy, one trip per quarter instead of one per medication per month, and a meaningful buffer if something goes wrong. Many insurance plans cover 90-day fills at the same or lower cost-sharing as monthly fills, particularly for mail-order.

The step beyond that: ask about a year’s supply. For stable, non-controlled chronic medications, prescribers can often authorize coverage for twelve months. Most patients don’t know this is possible. Many prescribers write monthly by default because that’s the convention, not because it’s required. It’s worth asking.

While you’re at it: write down every medication in the household — drug name, dose, prescriber, pharmacy — and keep that list somewhere you can find it. Paper, not only in your phone. The battery dies. The phone breaks. A paper list in your wallet or go-bag stays accessible when electronics don’t. Any pharmacist anywhere can work with a written list and a prescription bottle, even if your regular pharmacy is closed.

Layer two: the infections you don’t see coming

A longer chronic medication supply addresses the prescriptions you already take. It doesn’t cover what happens when you get sick in a situation where your primary care doctor isn’t reachable.

A UTI on the first day of a river cruise. A skin infection the weekend the urgent care closes for a holiday. A respiratory infection in a small town without a clinic open for three more days.

These are the scenarios that a JaseCase covers — common acute bacterial infections, prescribed by a licensed provider who reviews every request and writes every prescription. It’s emergency use only, for situations where you’ve tried to reach a provider and can’t. It’s not a replacement for your doctor. It’s what’s already on the shelf when your doctor isn’t reachable.

The medications in a JaseCase — ciprofloxacin, azithromycin, metronidazole, and others — cover the most common acute infections. For people over 65, there are drug interactions worth knowing about, which is exactly why every request is reviewed by a licensed clinician rather than filled automatically. The JaseCase isn’t a box of antibiotics — it’s a clinician-reviewed prescription for your specific situation.

To learn more about JaseCase, visit Jase.com

A note for adult children reading this

If you arrived at this article because you’re thinking about your parent rather than yourself: the two layers above apply directly. Help them get 90-day fills on their chronic medications. Help them write the medication list and put it somewhere accessible. Ask whether a JaseCase makes sense for the situations where they’re traveling, spending time at a second home, or otherwise away from their regular care.

The concern you’re managing — what happens if they can’t get their medications — is legitimate and addressable. The answer is building the supply before the scenario, not hoping the pharmacy is open when it matters.

Why medication comes first

Most emergency preparedness guides put water, food, and shelter at the top and medication near the bottom, if they mention it at all. We think that’s backward.

For most adults over 55, a five-day supply chain disruption is manageable without extra food stored. A five-day gap in thyroid medication, blood pressure medication, or anticoagulation is not. The stakes of missing a medication are orders of magnitude higher than the stakes of eating from the pantry for a few extra days.

Medication first. Everything else after.


Cayla McGrath is a content strategist with Jase Medical. This post is for informational purposes only and does not constitute medical advice. Always consult a licensed healthcare provider before making changes to your medication regimen or adding any new medication.*

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First Aid Kit Essentials: What Every Home and Family Needs

First Aid Kit Essentials: What Every Home and Family Needs

First Aid Kit Essentials: What Every Home and Family Needs The First Aid Guidelines Changed in 2024. Your Kit Probably Didn't. By Aaron Asay, PA-C, DMSc This is not a shopping trip. It's a fifteen-minute audit of what's already in the box under your sink — and for...

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First Aid Kit Essentials: What Every Home and Family Needs

First Aid Kit Essentials: What Every Home and Family Needs

The First Aid Guidelines Changed in 2024. Your Kit Probably Didn’t.

By Aaron Asay, PA-C, DMSc

This is not a shopping trip. It’s a fifteen-minute audit of what’s already in the box under your sink — and for most of it, the action is taking things out.

In 2024, the American Heart Association and the American Red Cross released the first full revision of the first aid guidelines since 2010. Fourteen years. Most of the checklists people find online still reflect the 2010 standard. Most of the kits sold in retail stores still ship with products the updated guidelines no longer recommend. And most households have no idea any of this changed.

There are four things worth knowing.

One: The aspirin dose is not what you think

Here’s the scenario I want you to sit with: someone’s chest hurts at the kitchen table. You’ve heard your whole life that you give them aspirin. So you go to the cabinet and grab the baby aspirin bottle, because that’s the heart one.

The dose in the 2024 guidelines is 162 to 325 milligrams, chewed, not swallowed whole.

That is two to four of those 81mg tablets. For a suspected heart attack, the instruction is: call 911 first. Then give aspirin — 162 to 325mg, chewed. The chewing matters because it speeds absorption. Swallowing a single 81mg tablet whole is not the right action, and plenty of first aid kits don’t contain enough tablets even if you know the correct dose.

Check what’s in your kit. Know the dose before you’re in the scenario.

Two: Hydrogen peroxide and rubbing alcohol don’t belong on open wounds

Both are still packaged in retail first aid kits. Both have been in medicine cabinets for generations because that’s what our parents used. The evidence has moved past them.

Hydrogen peroxide and isopropyl alcohol are cytotoxic to the cells involved in wound healing. Applied to an open wound, they damage the tissue trying to repair itself. The 2024 guidelines are explicit: clean an open wound with soap and clean running water. That’s it. If you have peroxide in your kit, take it out. It doesn’t belong on a cut.

Three: A commercial tourniquet is now on the Red Cross minimum kit list

For decades, tourniquets occupied an awkward space in first aid training — associated with military and trauma medicine, not household preparedness. That positioning has shifted. The 2024 guidelines add a manufactured tourniquet to the minimum contents for a standard first aid kit.

The key word is manufactured. Improvised tourniquets — belts, rope, shoelaces — are inconsistently effective and can cause additional injury. A commercial tourniquet (CAT, SOFT-T Wide, or similar) is designed specifically for the purpose and applies the right pressure reliably.

For life-threatening extremity bleeding, the protocol is: call 911, then apply the tourniquet two to three inches above the wound, tighten until bleeding stops, note the time. Don’t remove it. The emergency services take it from there.

Four: Naloxone — it’s over the counter now, and it’s not on the kit list

In 2023, naloxone (Narcan) became available over the counter in the United States. The 2024 first aid guidelines don’t add it to the minimum kit contents — but they acknowledge it exists, and the decision of whether to include it is a household-level judgment call.

Here’s the calculus: if your household includes someone who takes opioid medications — a post-surgical prescription, a chronic pain medication, a substance use disorder treatment — the presence of naloxone is worth thinking about. It reverses opioid overdose. It has no effect if opioids are not involved. The risk of having it in an unnecessary situation is essentially zero.

For opioid overdose: call 911 first. Then administer naloxone — nasal spray, one dose, wait two to three minutes. If no response, a second dose. The emergency services take it from there.

If you’re looking at this as a household decision: the argument for including naloxone is not that your family member will overdose. It’s that neighbors, guests, or strangers in a public setting might, and you’re equipped to respond in the minutes before EMS arrives.

The prescription layer

A first aid kit handles what happens to your body from the outside: cuts, burns, bleeding, sudden cardiac events. It holds nothing for the conditions your family takes medication for, and it can’t cover the acute bacterial infections that happen during the same stretch of time when your urgent care is closed and your doctor isn’t answering.

That layer is the JaseCase — common acute bacterial infections, prescribed by a licensed provider who reviews every request before writing a prescription. Not a first aid kit. Not a replacement for your doctor. The part of medical preparedness that first aid training was never designed to address.

To learn more about what the JaseCase covers, visit Jase.com

The audit

Open the box. Check the expiration dates — most sealed items have a two to five year shelf life, and a kit that was put together in 2018 and never opened has several items that need replacing.

Remove the peroxide. Check the aspirin count (you want enough for two to four tablets of 162-325mg). Confirm there’s a manufactured tourniquet if you want to meet the current Red Cross minimum. Decide about naloxone.

Fifteen minutes. Most of it taking things out and replacing what’s expired. That’s the audit


Aaron Asay, PA-C, DMSc, is a disaster medicine practitioner working with the Jase Medical Response team. This post is for informational purposes only and does not constitute medical advice. In a suspected cardiac or overdose emergency, call 911 immediately.*

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Epinephrine & Inhaler Refill (Back to School)

Epinephrine & Inhaler Refill (Back to School)

The September Asthma Surge Is Real. Here’s Why You Need to Act in July.

By Cayla McGrath

This is one of the few pieces we write that has an actual deadline.

Every September, pediatric asthma hospitalizations spike. The surge accounts for 20-25% of all childhood asthma hospitalizations in a given year, peaking approximately 17 days after Labor Day. The timing is not a coincidence: school resumes, viral respiratory illnesses start circulating, allergen exposures change, and — critically — the summer months are when controller medication adherence is at its annual low. Kids who were managing fine all summer hit September with poorly controlled airways and a new set of triggers.

If your child has asthma or uses epinephrine, the time to act is now. Not the week before school starts. Now.

Two separate problems

The back-to-school prep for a child with asthma or a history of anaphylaxis involves two distinct tasks that families often run together: documentation and supply. They have different timelines, different contacts, and different failure modes.

Documentation

For asthma: a written Asthma Action Plan, completed and signed by your child’s provider. This is what the school nurse needs to manage your child’s asthma and know when to escalate. Without it, most schools can’t administer the rescue inhaler during the school day.

For anaphylaxis: a Food Allergy & Anaphylaxis Action Plan (or equivalent) and, in most states, a Self-Carry Authorization Form — a physician-signed document that allows your child to carry their own epinephrine auto-injector at school. The specific form varies by state. Some districts require it to go through Section 504 — a formal disability accommodation process — which has its own timeline. Check your district’s requirements now, not in August.

Section 504 is worth understanding briefly: it’s a federal civil rights protection that entitles students with disabilities (including well-controlled asthma and allergies) to reasonable accommodations at school, including the right to carry and self-administer medications. If your child doesn’t have a 504 plan and needs one to manage their condition at school, the process takes time. This is not a form to submit the week before school starts.

Supply

Two issues to address separately:

Epinephrine auto-injectors: Request two. Between 10 and 36 percent of anaphylactic reactions require a second dose of epinephrine because the first dose doesn’t fully resolve the reaction. Standard guidance from allergists and emergency medicine providers is to have two doses available. That means two auto-injectors prescribed and filled — one to stay at school, one with the child or in the family’s go bag.

Albuterol: There is an ongoing shortage of albuterol metered-dose inhalers (MDIs). If you’re having trouble getting a refill, ask your provider or pharmacist about albuterol inhalation solution — the liquid form used with a nebulizer. This is a different formulation than the MDI, but it’s the same medication. The nebulizer route requires the equipment (compressor machine, tubing, and mask or mouthpiece), which some families already have and some don’t. If this is a new option for your household, start early: getting the equipment, learning the setup, and making sure your child is comfortable with it takes more than a few days.

Heat and storage

Epinephrine degrades with heat. A car on a summer day can reach 130°F or higher — temperatures that significantly accelerate epinephrine breakdown. Don’t leave auto-injectors in a car. Keep them at room temperature, ideally below 86°F.

If your child leaves an auto-injector in a backpack during a hot outdoor activity or a car ride, it’s worth knowing: the medication may not perform as expected if it’s been heat-exposed repeatedly. Inspect the viewing window — epinephrine should be clear and colorless. Any discoloration or cloudiness is a reason to replace it.

Recently expired epinephrine: replace it, but understand the nuance

if it’s expired, replace it. Don’t use “it still probably works” as a reason to put off a refill. The whole point of back-to-school prep is to have reliable, non-expired medication in hand before your child needs it.

Undesignated school stock

Approximately two dozen states have laws allowing schools to stock undesignated epinephrine — meaning the school has auto-injectors on hand for students who don’t have their own or whose auto-injector isn’t accessible in an emergency. The specific form varies by state: some stock traditional auto-injectors, some stock nasal epinephrine (Neffy), which requires no injection.

Know your state’s law. Know whether your school has undesignated stock. This doesn’t replace your child having their own auto-injector at school — but it’s relevant information for understanding what backup exists.

The timeline

Start the documentation now: Asthma Action Plan, Food Allergy Action Plan, Self-Carry form, Section 504 if needed. These require provider sign-off and, for 504, a school meeting. July timelines leave room for delays.

Fill the prescriptions now: two auto-injectors, albuterol (and nebulizer solution if MDI is unavailable). If anything needs a prior authorization, insurance appeal, or alternative formulation conversation, better to have that happen in July than the week before school.

The September surge happens every year on the same timeline. The families who make it through without a hospitalization are usually not the ones with better-controlled asthma at baseline — they’re the ones who did this prep in July.

JaseCase is built around the everyday bacterial infections that happen year-round. It doesn’t include epinephrine or asthma controllers — those are medical devices and controller medications that require individual provider relationships and specific management plans. The principle is the same, though: knowing what you have, knowing what it covers, and taking action before you’re in the scenario.

To learn more about what the JaseCase covers, visit Jase.com


Cayla McGrath is a content strategist with Jase Medical. This post is for informational purposes only and does not constitute medical advice. Always consult a licensed healthcare provider before using any prescription medication.

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Your Kid Has a Sore Throat. No Cough, Running a Fever. Is This Strep?

Strep Throat vs. Sore Throat

Your Kid Has a Sore Throat. No Cough, Running a Fever. Is This Strep?

By Cayla McGrath

A sore throat on a Monday morning. No cough, body feels warm, maybe the throat looks a little red. The questions that immediately follow: Is this strep? Do they need to go in? Do I need to call for an antibiotic?

Here’s the practical answer, and the clinical reasoning behind it — because the decision framework for a sore throat is actually well-established and not complicated once you know what it’s based on.

Most sore throats are not strep

Roughly 85 to 90 percent of sore throats in adults are caused by viruses. In children the proportion is somewhat lower, but viral sore throats are still more common than strep. Antibiotics don’t work on viral infections. Prescribing antibiotics for a viral sore throat doesn’t shorten the illness, doesn’t reduce symptoms, and carries the standard costs: impact on the gut microbiome, risk of antibiotic-associated side effects, contribution to resistance.

This is why reflexively reaching for antibiotics at the first sore throat isn’t the right move — for most sore throats, they’re not indicated and won’t help.

The actual problem: permethrin resistance

Permethrin is the active ingredient in most over-the-counter lice treatments. A 2016 study documented knockdown resistance (kdr) mutations in head lice in 48 states. In states with high resistance, upward of 98-100% of lice sampled carried the genetic mutation that makes permethrin ineffective. This is not a hypothetical concern — it’s been documented across most of the country for nearly a decade.

Pyrethrin-based treatments (Rid, A-200) work through the same mechanism and carry the same resistance profile. If the lice survived permethrin, they will also survive pyrethrin.

The Centor criteria: how providers actually triage sore throats

In clinical practice, providers use a scoring system called the Centor criteria to estimate the probability that a sore throat is Group A Streptococcus (GAS) — the bacteria behind strep. The original Centor score has four components:

1. Tonsillar exudate (white patches on the tonsils)
2. Tender anterior cervical lymph nodes (the lymph nodes in the front of the neck are swollen and painful to touch)
3. Absence of cough (strep rarely presents with a cough; if your child is coughing a lot, that tilts toward viral)
4. History of fever

One point for each. Here’s what the score predicts:

– 0-1 criteria: probability of strep 3-10%. No testing, no antibiotics generally warranted.
– 2-3 criteria: probability of strep 15-35%. Testing is reasonable.
– 4 criteria: probability of strep around 50%. Testing or empiric treatment may be considered.

A score of 0 or 1 means the probability that this is strep is very low — in the range of 3 to 10 percent. A modified version of the score (McIsaac) adds an age factor. The key insight: even at the highest Centor score, you’re still only looking at about a 50% probability. Testing before treating isn’t just procedural caution — it reflects that the majority of sore throats, even those with several Centor features, are still not strep.

The practical consumer takeaway: if the sore throat comes WITH a lot of coughing, runny nose, and congestion — signs pointing to a classic upper respiratory viral infection — the probability of strep drops significantly. If it’s an isolated sore throat with fever and no cough, the score is higher and a test makes more sense.

Why test? (And what the test is for)

Rapid strep tests and throat cultures exist because treatment matters — both in terms of giving the right treatment if it IS strep, and in terms of not giving unnecessary antibiotics if it isn’t.

The test for strep is straightforward: a rapid antigen detection test done in-office gives results in minutes. Throat cultures are more sensitive and used to confirm negative rapid tests in children and adolescents, where missing a strep diagnosis has more consequences.

Which brings us to the question of why missing strep matters at all.

Rheumatic fever: the historical reason the test exists

Untreated Group A Strep can — in rare cases — lead to rheumatic fever, an inflammatory condition that can damage heart valves. This is why identifying and treating strep has been clinically important since long before antibiotic use was widespread. Rheumatic fever is uncommon in developed countries with good healthcare access today, but it’s the reason the medical community takes strep identification seriously and why treatment guidelines recommend a full antibiotic course even when symptoms improve early.

This is context, not panic: rheumatic fever risk is the clinical justification for why the test matters, not a reason to assume every sore throat is a cardiac event in waiting.

When it IS strep: penicillin or amoxicillin

Here’s something that is genuinely reassuring: Group A Strep has never developed resistance to penicillin. In an era where antibiotic resistance is an escalating concern across almost every other bacterial pathogen, GAS remains reliably and completely susceptible to penicillin.

If a strep test is positive, the first-line treatment is penicillin or amoxicillin for 10 days. The 10-day course is important — it’s long enough to eradicate GAS from the throat and reduce the risk of rheumatic fever. Symptoms typically improve within 24-48 hours of starting antibiotics, but completing the full course matters.

For penicillin-allergic patients, alternatives include azithromycin or a cephalosporin, depending on the allergy profile and clinical context.

The practical triage logic

For the kid with a sore throat Monday morning:

No cough + fever + swollen tender neck nodes = higher Centor score → get tested. The test is quick, and knowing whether it’s strep changes the management.

Sore throat with significant coughing, runny nose, or congestion → lower probability of strep, more likely viral. Supportive care — fluids, rest, pain management with ibuprofen or acetaminophen. A test is still reasonable if you want to confirm, but the clinical picture leans toward viral.

The question to answer at the bedside is: does this presentation fit the Centor pattern (isolated sore throat, no cough, fever, maybe swollen nodes) or does it look like a broader upper respiratory illness? That distinction drives whether testing and treatment enter the picture.

Where JaseCase fits

JaseCase includes azithromycin, which is one of the alternatives used for strep throat in penicillin-allergic patients. Penicillin and amoxicillin — the actual first-line treatments — require a separate prescription. More broadly, strep throat is one of the common acute bacterial infections where a positive test and a clear clinical picture make the antibiotic decision straightforward. JaseCase is built for situations where access to care is delayed or limited — and knowing when to use what it contains (and when it’s not the right tool) is part of the JaseCase solution as well.

To learn more about what the JaseCase covers, visit Jase.com


Cayla McGrath is a content strategist with Jase Medical. This post is for informational purposes only and does not constitute medical advice. Always consult a licensed healthcare provider before using any prescription medication.

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Everything You Were Told About Head Lice Is Wrong. Here’s What Actually Works

Head Lice

Everything You Were Told About Head Lice Is Wrong. Here’s What Actually Work

By Cayla McGrath

If you’ve ever gotten a lice notification from your child’s school, you already know the sequence that follows: the check, the panic, the trip to the drugstore, the bottle of Nix. And then, for a growing number of families, the follow-up two weeks later when the lice are still there.

Here’s what most parents don’t know going into that cycle: the treatment that comes in every drugstore lice kit has a resistance problem that has been documented in 48 states. If permethrin worked in your house, you got lucky — or you live in one of the two remaining states where resistance hasn’t yet been confirmed. For most of the country, reaching for the standard drugstore treatment is the equivalent of spraying resistant bacteria with an antibiotic it already knows how to survive.

Before we get to what actually works, there are also several things that don’t need to be done at all — starting with almost everything the panicked first hour of a lice situation typically involves.

The myths, corrected

*Lice prefer dirty hair.* This is the one that causes the most unnecessary shame and is also simply not true. Head lice don’t distinguish between clean hair and dirty hair. They’re looking for warmth, a scalp, and proximity to another head. A child with freshly washed hair is just as hospitable to lice as a child who hasn’t bathed in three days. Lice found in your child’s hair says nothing about your household cleanliness.

*Your dog has to be treated.* No. Human head lice (Pediculus humanus capitis) are human-specific. They require a human host to survive and reproduce. Your dog, cat, or any other household pet is not a vector. The pets do not need treatment.

*Your child needs to stay home until every nit is gone.* The American Academy of Pediatrics updated their guidance on this in 2015 and is unambiguous: children should not be excluded from school based on nits alone. Nits that are more than a centimeter from the scalp are not viable — they’re empty casings or eggs that won’t hatch. The AAP specifically recommends against “no-nit” policies, which keep healthy children out of school without clinical justification. If your school has a no-nit policy, that policy is not based on current medical guidance.

*You need to bag all the stuffed animals and boil everything.* Lice need a human host and die within 24 to 48 hours off the scalp. Intensive home decontamination — bagging every soft surface, washing every sheet and pillowcase on the same day — goes far beyond what the evidence supports. Wash the pillowcase, wash the brushes and combs in hot water, and don’t share hats or headgear. The lice are on heads, not environments.

The actual problem: permethrin resistance

Permethrin is the active ingredient in most over-the-counter lice treatments. A 2016 study documented knockdown resistance (kdr) mutations in head lice in 48 states. In states with high resistance, upward of 98-100% of lice sampled carried the genetic mutation that makes permethrin ineffective. This is not a hypothetical concern — it’s been documented across most of the country for nearly a decade.

Pyrethrin-based treatments (Rid, A-200) work through the same mechanism and carry the same resistance profile. If the lice survived permethrin, they will also survive pyrethrin.

The treatment ladder

When permethrin doesn’t work — or when you want to skip the product that’s likely not to work — here’s the sequence of prescription and newer OTC options that do:

Benzyl alcohol 5% (Ulesfia): Works by suffocating lice, not through neurotoxicity, so resistance doesn’t apply. It kills live lice but not eggs, so a second treatment 7 days later is required. Approved for children age 6 months and older.

Malathion 0.5% (Ovide):*An organophosphate that kills both live lice and some eggs. More effective against resistant strains than permethrin. Applied for 8-12 hours (usually overnight). Prescription required.

Spinosad 0.9% (Natroba): Derived from soil bacteria, different mechanism of action, kills lice and most nits. Single application is often sufficient, with a second treatment possible at day 7 if live lice are still present. Prescription required, approved for age 6 months and older.

Ivermectin 0.5% lotion (Sklice): Kills lice through a different neuromuscular mechanism and is also effective against resistant strains. Single application. Prescription required, approved for age 6 months and older.

Oral ivermectin is sometimes used off-label for lice; this is a clinical decision that involves dosing, age, and weight considerations and requires a provider conversation.

The nit comb is still useful: Regardless of which treatment you use, wet combing with a fine-tooth metal louse comb every 2-3 days between treatment applications removes nits and newly hatched lice before they can reproduce. It’s time-consuming and not sufficient as a standalone treatment, but it significantly improves outcomes when paired with any of the above.

The bottom line

When a school sends home a lice notification, there are two tasks. First, check — confirm whether lice or viable nits are actually present before starting any treatment. Second, choose a treatment that actually works for the current resistance profile in your area. For most of the country, that means skipping the drugstore permethrin and going straight to a provider for a prescription alternative.

The three things that don’t need to happen: treating the pets, treating the environment extensively, or keeping a child home from school because some nits remain. The lice are on the head. That’s where the treatment should go.

JaseCase covers the infections that need antibiotics — UTIs, respiratory infections, skin infections. Head lice are a parasitic infestation, not a bacterial infection, so they’re outside its scope. But knowing which treatments are effective and which are not — that’s the medical literacy that saves you from a second (and third) failed treatment cycle.

To learn more about what the JaseCase covers, visit Jase.com


Cayla McGrath is a content strategist with Jase Medical. This post is for informational purposes only and does not constitute medical advice. Always consult a licensed healthcare provider before using any prescription medication.

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What Is Doxycycline Used For?

What Is Doxycycline Used For?

One Antibiotic, Five Different Problems. Here’s the Pharmacology Behind It.

By Cayla McGrath

If you’ve ever been prescribed doxycycline for a tick bite, then later for acne, then spotted it again on a list of malaria prevention options before travel — and wondered why the same antibiotic keeps showing up in completely unrelated situations — that’s not a marketing play. It’s pharmacology. One mechanism that, as it turns out, lines up with more biological targets than most antibiotics can claim.

Here’s how one drug ends up on so many different prescriptions, and what it actually covers — including one use that’s still being actively debated by credible health authorities on both sides of the Atlantic.

The mechanism

Doxycycline belongs to the tetracycline class of antibiotics. It works by binding to the 30S subunit of the bacterial ribosome and blocking protein synthesis. Bacteria depend on continuous protein synthesis to function and replicate. Shut that down, and the bacterial population can no longer grow. Doxycycline is bacteriostatic rather than bactericidal — it inhibits bacterial replication rather than directly killing bacteria — which means the immune system handles clearance once the bacteria can’t multiply.

The malaria piece works through a related but distinct pathway. The malaria parasite, Plasmodium, carries an unusual organelle called the apicoplast — an evolutionary remnant of an ancient symbiotic relationship with a bacterium, similar in origin to a chloroplast in plant cells. The apicoplast has its own protein synthesis machinery that resembles a bacterial ribosome more than a human one. Doxycycline, developed to target bacterial ribosomes, also disrupts the apicoplast’s protein synthesis, which the parasite depends on. This is why a drug designed for bacteria also interferes with a parasite: the target is structurally similar.

One mechanism. Several targets. That’s the full explanation for why one drug treats so many different things.

Lyme disease

Doxycycline is the first-line treatment for Lyme disease in adults and children over eight years old, per the 2020 IDSA/AAN/ACR guidelines. The standard recommendation for early localized or early disseminated Lyme disease is a 10-day course — and the data support that course as equivalent in outcomes to the longer regimens that were historically prescribed.

A single 200mg dose is also recommended as post-exposure prophylaxis within 72 hours of a high-risk tick bite. Specific criteria apply: the bite must be from a deer tick (Ixodes scapularis), the tick must have been attached for at least 36 hours, and it must have occurred in a geographic area with meaningful Lyme prevalence.

Worth naming directly: the ILADS guidelines take a different position from IDSA on treatment duration. That disagreement between credible professional bodies is real and ongoing. Patients navigating persistent symptoms after Lyme treatment should know the guidelines don’t fully agree.

Malaria prevention

For travelers going to areas where chloroquine-resistant Plasmodium falciparum is present, daily doxycycline is one of the CDC-recommended chemoprophylaxis options alongside atovaquone-proguanil (Malarone).

Per CDC malaria guidance: start one to two days before travel, take daily throughout exposure, and continue for 28 days after leaving the endemic area. The 28-day continuation period is the part most travelers miss or shorten. Practical notes: take with food and a full glass of water to reduce esophageal irritation. Photosensitivity — increased tendency to sunburn — is common and worth knowing before spending time somewhere sunny.

Chlamydia and other sexually transmitted infections

Doxycycline is first-line treatment for chlamydia at 100mg twice daily for seven days (CDC STI Treatment Guidelines). It also covers Mycoplasma genitalium, a bacterial STI with overlapping symptoms not always tested alongside chlamydia.

The newest and most debated use is doxy-PEP: a single 200mg dose taken within 72 hours of unprotected sexual contact, intended to reduce transmission of bacterial STIs including chlamydia, gonorrhea, and syphilis. The 2024 CDC MMWR guidelines endorsed doxy-PEP for a specific population — gay and bisexual men and transgender women who have had at least one bacterial STI diagnosis in the prior 12 months. CDC guidance is not a blanket recommendation for broader use.

Where it gets complicated: WHO and European health authorities including ECDC have taken a meaningfully more cautious position, citing concerns about accelerating resistance in Neisseria gonorrhoeae. This is a genuine ongoing debate between credible public health bodies. Anyone considering doxy-PEP should be having that conversation with their provider.

Acne and rosacea

Doxycycline treats inflammatory acne through two mechanisms: it reduces Cutibacterium acnes and has direct anti-inflammatory activity independent of its antibiotic effect. Typical acne dosing is 50-100mg once daily.

A subantimicrobial dose — low enough to not exert meaningful antibiotic selection pressure — is used for rosacea (Oracea at 40mg modified-release) and as an adjunct in periodontal treatment for reducing gum-pocket depth. This separates the anti-inflammatory benefit from the antibiotic activity.

One absolute contraindication

Doxycycline is contraindicated in pregnancy and in children under eight years old. In developing teeth and bones, tetracyclines bind to calcium and cause permanent discoloration and affect bone growth. This is not a soft cautionary note — it’s an absolute contraindication.

Where doxycycline fits in the broader preparedness picture

The JaseCase doesn’t include doxycycline — it covers ciprofloxacin, azithromycin, and metronidazole. Doxycycline’s territory is distinct: tick-borne illness, malaria prevention, certain STIs, and specific inflammatory skin conditions. Knowing the gaps matters as much as knowing the contents. Understanding what each antibiotic covers — and what falls outside its spectrum — is the foundation of using any prepared medication supply correctly.

To learn more about what the JaseCase covers, visit Jase.com


Cayla McGrath is a content strategist with Jase Medical. This post is for informational purposes only and does not constitute medical advice. Always consult a licensed healthcare provider before using any prescription medication.

Lifesaving Solutions

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

Recent Posts

Keeping you informed and safe.

For Clinicians | Emergency Preparedness in Older Adults

For Clinicians | Emergency Preparedness in Older Adults

For Clinicians | Emergency Preparedness in Older Adults The Three Parts That Are Yours By Dr. Jamie Wilkey, PharmD — Director of Clinical Strategy, JaseMedically reviewed and edited by Kristen Carpenter, PA-C Most of your patients over 55 are doing well. Pickleball...

read more
First Aid Kit Essentials: What Every Home and Family Needs

First Aid Kit Essentials: What Every Home and Family Needs

First Aid Kit Essentials: What Every Home and Family Needs The First Aid Guidelines Changed in 2024. Your Kit Probably Didn't. By Aaron Asay, PA-C, DMSc This is not a shopping trip. It's a fifteen-minute audit of what's already in the box under your sink — and for...

read more

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!