Over-the-Counter Antibiotics: What You Can Buy and What Needs a Prescription
You can buy antibiotic ointment off the shelf, but not antibiotic pills. Here is what OTC products can actually treat, what to use instead for common symptoms, and how to get a prescription quickly when you truly need one.
In the United States, no antibiotic pills or liquids are sold over the counter. Amoxicillin, azithromycin (Z-Pack), doxycycline, cephalexin and every other oral antibiotic need a prescription. The only OTC antibiotics are creams and ointments for minor cuts and scrapes, such as bacitracin and triple antibiotic ointment. That is not a technicality: most common illnesses, including colds, flu and most sore throats and sinus infections, are caused by viruses, and antibiotics do nothing for them.
- OTC antibiotic ointments (bacitracin, neomycin-polymyxin B-bacitracin) help prevent infection in minor skin wounds.
- Antifungal creams like clotrimazole and miconazole are sold OTC, but they treat fungus, not bacteria.
- Antibiotics only work on bacteria. They do not treat colds, flu or COVID-19.
- The FDA has sent warning letters to companies selling unapproved "fish" antibiotics without a prescription.
- When you do need an antibiotic, an online visit with a licensed provider can be a fast way to get a prescription.
What antibiotics are sold over the counter?
Only topical ones, meaning products you put on the skin:
- Bacitracin ointment and triple antibiotic ointment (neomycin, polymyxin B and bacitracin) for small cuts, scrapes and burns.
- Some first-aid creams combine an antibiotic with a pain reliever.
These help prevent a minor wound from getting infected. They are not strong enough to treat a skin infection that is already spreading. For infected skin, such as impetigo or a red, warm, swollen area, a provider may prescribe mupirocin ointment or an antibiotic by mouth like cephalexin.
💡 Not antibiotics, but often confused with them
OTC antifungals (clotrimazole, miconazole, terbinafine cream) treat athlete's foot, jock itch, ringworm and vaginal yeast infections. They are sold without a prescription and work well for those problems, but they do not kill bacteria.
Why antibiotic pills need a prescription
Antibiotics are powerful, and using the wrong one, the wrong way, or for an illness they cannot treat causes real harm (MedlinePlus):
- They do not work on viruses. Taking an antibiotic for a cold or flu will not make you better faster.
- Side effects are common. Diarrhea, upset stomach and yeast infections are frequent. Allergic reactions and a serious gut infection called C. diff can happen.
- Resistance. Every unnecessary course helps bacteria learn to survive antibiotics, which makes future infections harder to treat, for you and for everyone else.
- The right drug matters. A UTI, strep throat and a skin infection each call for a different antibiotic, dose and length of treatment.
What to use instead, symptom by symptom
| Symptom | Usually caused by | Try first | When to see a provider |
|---|---|---|---|
| Cold, runny nose, cough | Virus | Rest, fluids, OTC cough and cold medicine | Trouble breathing, symptoms over 10 days |
| Sore throat | Usually a virus | Pain relievers, throat lozenges, warm drinks | Severe pain, fever, no cough, swollen glands (possible strep) |
| Sinus pressure | Usually a virus | Saline rinse, steroid nasal spray, pain reliever | Over 10 days, severe, or worse after improving |
| Burning when you pee | Bacteria (UTI) | Phenazopyridine eases pain but does not cure it | Now: a UTI usually needs an antibiotic |
| Vaginal itching, white discharge | Yeast | OTC miconazole or clotrimazole | First infection, or OTC did not work |
| Minor cut or scrape | Risk of bacteria | Clean it, OTC antibiotic ointment | Spreading redness, warmth, pus or fever |
Our guides go deeper on OTC UTI medicine, yeast infections and sinus infections.
Fish antibiotics and pills from abroad
Some people turn to antibiotics sold for aquarium fish or birds, which can contain the same molecules as human antibiotics, such as amoxicillin. In November 2023 the FDA sent warning letters to nine companies selling unapproved antimicrobials for fish and birds without a veterinary prescription, warning that their use without medical oversight contributes to antimicrobial resistance (fda.gov).
These products are not approved for people, and you have no way to know the dose, quality or whether you need an antibiotic at all. The same goes for antibiotics bought from overseas websites that do not ask for a prescription.
When you really do need an antibiotic
Common reasons a provider prescribes an antibiotic include a urinary tract infection, strep throat confirmed by a test, a sinus infection that lasts more than 10 days or gets worse after improving, and some skin infections.
For problems like these, you do not always need to sit in a waiting room. Rx.com's online urgent care visit is a flat $99 with a U.S.-licensed provider, with no insurance needed. If an antibiotic is right for you, the prescription goes to your local pharmacy. If it is not, the provider will tell you what will help instead, or whether you need to be seen in person.
What antibiotics cost
Most common antibiotics are inexpensive generics. In October 2026, the lowest prices we found on Rx.com included amoxicillin from $6.31, azithromycin from $8.93 and cephalexin from $10.57. Prices vary by pharmacy, location and quantity. Show a free Rx.com coupon at the pharmacy, or compare it with your insurance copay.
🚨 When to Get Medical Care Right Away
- Trouble breathing, chest pain or a high fever that will not come down.
- A UTI with fever, chills, back or side pain, or vomiting: it may have reached the kidneys.
- Skin redness that spreads quickly, red streaks, or a wound with fever.
- Swelling of the face, lips or throat, or hives with trouble breathing after taking any medicine: call 911.
Frequently Asked Questions
Can you buy antibiotics over the counter?
Only antibiotic creams and ointments for minor wounds, like bacitracin and triple antibiotic ointment. Antibiotic pills and liquids require a prescription in the U.S.
Is there an over-the-counter amoxicillin?
No. Amoxicillin is prescription-only. Products sold as "fish amoxicillin" are not approved for people, and the FDA has warned companies that sell them.
What can I take instead of antibiotics for a sinus infection?
Most sinus infections are viral and improve on their own. Saline rinses, a steroid nasal spray like fluticasone and pain relievers ease symptoms. Antibiotics are usually considered only if symptoms last more than 10 days, are severe, or get worse after improving.
Is there an OTC antibiotic for a UTI?
No. OTC phenazopyridine (AZO) relieves the burning but does not treat the infection. A UTI usually needs a prescription antibiotic.
Can I get antibiotics online?
You can see a licensed provider online, who decides whether an antibiotic is right for you. If it is, the prescription is sent to a pharmacy. A legitimate service will never sell antibiotics without a provider's review.
Is it safe to use leftover antibiotics?
It is not a good idea. Leftover pills may be the wrong drug or not enough for a full course, and taking them can hide symptoms that need a different treatment. Ask a provider instead.
Not sure if you need an antibiotic?
A U.S.-licensed provider can tell you online for a flat $99. If you need a prescription, pick it up at your local pharmacy.
Sources
- MedlinePlus. Antibiotics. medlineplus.gov
- U.S. Food and Drug Administration. FDA warns nine manufacturers, distributors of unapproved antimicrobials for animals. fda.gov
- Centers for Disease Control and Prevention. Sinus infection basics. cdc.gov
- Shulman ST, et al. Clinical practice guideline for the diagnosis and management of group A streptococcal pharyngitis: 2012 update by the Infectious Diseases Society of America. Clinical Infectious Diseases. 2012. PubMed
