To get antibiotics for a sexually transmitted infection, you need a positive test result or clinical evaluation from a licensed provider. There are no over-the-counter antibiotics for STIs in the United States. The FDA has stated plainly that no nonprescription products treat or prevent STDs, and the agency has taken enforcement action against companies marketing such products. The good news: getting tested and treated is faster and more accessible than most people expect, with options ranging from same-day clinic visits to telehealth appointments you can do from your couch.
Why You Need a Test First
Different STIs require different antibiotics, and some symptoms overlap. Burning during urination, for instance, could signal chlamydia, gonorrhea, or something else entirely. A provider needs to identify the specific infection before prescribing the right medication. Using the wrong antibiotic wastes time, lets the infection spread, and can contribute to drug resistance.
Testing itself is straightforward. Chlamydia and gonorrhea can be confirmed with a simple urine sample or a self-collected vaginal swab. Syphilis and HIV require a blood draw. Many clinics offer rapid results within a day or two, and some provide same-day treatment if your symptoms and risk factors are clear enough for the provider to start you on medication while lab results are pending.
Telehealth: The Fastest Route for Many People
If visiting a clinic feels like a barrier, telehealth has become a legitimate and widely used option for STI care. Planned Parenthood, for example, offers virtual appointments in many states where you can talk to a nurse or doctor by phone, video, or messaging. They’ll discuss your symptoms, order testing if needed, and send a prescription to your pharmacy or ship medication directly to you.
Several other telehealth platforms operate similarly. The general process looks like this: you book an appointment online, describe your symptoms and sexual history, complete any required lab work (some services mail you an at-home test kit), and then receive a prescription once results confirm the infection. The whole process can take anywhere from a few hours to a few days depending on how quickly lab results come back.
In-Person Clinics and Low-Cost Options
For people without insurance or with limited budgets, several types of facilities offer free or sliding-scale STI testing and treatment. Community health centers funded by the federal government (sometimes called FQHCs) are required to see patients regardless of ability to pay. Planned Parenthood health centers operate on a similar model. State and county health departments also run sexual health clinics that provide low-cost or free care, and many don’t require proof of residency or identification.
Urgent care centers and your regular primary care doctor can also test and treat STIs. If you have insurance, STI screening is typically covered as preventive care with no out-of-pocket cost, though treatment costs vary by plan. If you’re uninsured, community health centers are usually the most affordable path.
What Treatment Looks Like
Many bacterial STIs are curable with a single dose or a short course of antibiotics. Chlamydia is typically treated with a week-long course of oral antibiotics taken twice daily. Gonorrhea treatment is a single injection, which is why gonorrhea usually requires an in-person visit rather than a telehealth prescription. Syphilis is also treated with an injection. Trichomoniasis, a parasitic infection, is cured with a single oral dose.
Gonorrhea treatment specifically requires an injection because of growing antibiotic resistance worldwide. The World Health Organization has documented that 82 million new gonorrhea cases involve strains resistant to one or more classes of antibiotics, and even the current first-line injectable treatment is showing early signs of reduced effectiveness. This is a major reason providers won’t prescribe oral-only gonorrhea treatment in most cases, and why taking the exact medication prescribed (rather than leftover antibiotics or someone else’s prescription) matters so much.
How Long Until You’re Clear
After starting antibiotics for chlamydia, you should avoid sex for seven days after a single-dose treatment or until you’ve finished a full seven-day course and any symptoms have resolved. The same general window applies to gonorrhea. You should also wait until your sexual partners have been treated before resuming sexual activity, since reinfection is common.
A follow-up “test of cure” isn’t routinely recommended for most people treated for chlamydia, but retesting about three months later is. This isn’t because the antibiotics failed. It’s because reinfection rates are high, especially if a partner wasn’t treated. If you do get retested, wait at least four weeks after finishing your antibiotics. Testing too soon can pick up remnants of the dead bacteria and give a false positive.
Getting Treatment for a Partner
If you test positive for chlamydia or gonorrhea, your sexual partners need treatment too. In 48 states plus Washington, D.C., a legal option called expedited partner therapy allows your provider to write a prescription for your partner without examining them first. This means your doctor can give you medication or a prescription to hand directly to your partner.
This approach exists because, realistically, many partners won’t make it to a clinic on their own. It’s not the ideal scenario (a full evaluation is always better), but it’s far better than leaving a partner untreated and continuing the cycle of reinfection. Ask your provider whether EPT is available in your state if your partner is unlikely to seek care independently.
What Won’t Work
Fish antibiotics, veterinary medications, leftover prescriptions, and supplements marketed as STD cures are all ineffective and potentially dangerous. The FDA and FTC have jointly targeted companies selling nonprescription “STD remedies” online, calling them bogus. No dietary supplement, herbal product, or over-the-counter medication can treat a bacterial STI. Using these products delays real treatment, gives the infection more time to cause damage (like infertility from untreated chlamydia), and increases the chance of spreading the infection to others.
Antibiotics purchased from overseas pharmacies or without a prescription also carry serious risks. You can’t verify the drug’s quality, dosage, or whether it’s even the right medication for your infection. The fastest, safest, and often cheapest path is through one of the clinical options above, many of which cost nothing out of pocket.