Four of the most common STDs are fully curable with antibiotics or antiparasitic medication: chlamydia, gonorrhea, syphilis, and trichomoniasis. The other four major STDs, caused by viruses (HIV, herpes, hepatitis B, and HPV), cannot be cured but can be effectively managed with medication. Which category your infection falls into determines what treatment looks like and what to expect afterward.
Curable STDs and How They’re Treated
The four curable STDs are all treated with prescription medication, and in many cases, a single dose is all it takes. Chlamydia is typically cleared with a short course of oral antibiotics lasting about seven days. Gonorrhea is treated with a single antibiotic injection. Syphilis, when caught in its early stages, is cured with a single injection of penicillin. Trichomoniasis, caused by a parasite rather than bacteria, is treated with an oral antiparasitic medication.
These treatments are straightforward, but you do need a prescription. There is no over-the-counter cure for any STD. You cannot treat these infections with home remedies, supplements, or antibiotics left over from a previous prescription. Using the wrong antibiotic, or the wrong dose, risks leaving the infection partially treated, which can contribute to drug resistance and allow complications to develop.
One important wrinkle: gonorrhea has become increasingly resistant to antibiotics over the years. The treatment that works today may not work as well in the future, and in rare cases, a first round of treatment doesn’t fully clear the infection. If your symptoms persist after treatment for gonorrhea, your doctor will need to run additional tests and may try a different combination of medications.
STDs That Can’t Be Cured but Can Be Controlled
Herpes, HIV, hepatitis B, and HPV are viral infections with no cure. But “no cure” doesn’t mean “no treatment,” and it doesn’t mean the same thing for each virus.
HIV is the most dramatic example of how far treatment has come. Antiretroviral therapy suppresses the virus to undetectable levels in the blood, and a person who maintains an undetectable viral load has zero risk of transmitting HIV to sexual partners. This isn’t a technicality. It’s a well-established medical fact, often summarized as “undetectable equals untransmittable.” Treatment is daily medication, taken for life, but people living with HIV on effective treatment have near-normal life expectancies.
Genital herpes is managed with antiviral medications that reduce the frequency of outbreaks by 70% to 80% in people who have frequent recurrences. Daily suppressive therapy also lowers the chance of passing the virus to a partner. Herpes is not dangerous for most adults, but outbreaks can be painful and stressful, so suppressive therapy makes a real quality-of-life difference.
Hepatitis B is managed with antivirals that slow liver damage. Many people clear the infection on their own, but chronic hepatitis B requires ongoing monitoring and sometimes long-term medication. HPV often clears from the body without treatment within one to two years, though certain strains can cause genital warts or, over time, increase the risk of certain cancers. Vaccination prevents the most harmful HPV strains entirely.
What Happens After Treatment
Getting treated doesn’t mean you’re immediately in the clear. For curable STDs, you’ll typically need to get retested about three months after treatment to confirm the infection is gone. This “test of cure” matters because reinfection is common, especially if a sexual partner wasn’t treated at the same time. For chlamydia and gonorrhea specifically, retesting at three months is standard practice.
You should avoid sex during treatment and for at least seven days after completing a single-dose regimen, or until you’ve finished a multi-day course. Having sex too soon risks passing the infection back and forth between partners.
Your Partner Needs Treatment Too
Curing your STD does nothing if your partner is still infected. Reinfection from an untreated partner is one of the most common reasons people end up testing positive again shortly after treatment. For chlamydia and gonorrhea, many doctors can provide what’s called expedited partner therapy: they write a prescription for your partner without requiring your partner to come in for a separate exam. This removes one of the biggest barriers to getting partners treated, since not everyone has easy access to a clinic or feels comfortable scheduling their own visit.
For other STDs, your partner will need their own appointment. Either way, notifying recent sexual partners isn’t optional if you want treatment to actually stick. Many local health departments also offer anonymous partner notification services if you’d rather not have the conversation yourself.
Why Treating Early Matters
STDs that are easy to cure in their early stages can cause serious, irreversible damage if left untreated. Chlamydia and gonorrhea can both lead to pelvic inflammatory disease in women, which can scar the fallopian tubes and cause infertility. In men, untreated infections can lead to painful inflammation in the reproductive tract.
Syphilis is especially dangerous when ignored. In its early stages, it’s cured with a single shot. Left untreated, it progresses through stages over months and years, eventually damaging the heart, brain, nervous system, and other organs. It can also be passed to a developing baby during pregnancy, causing severe birth defects or stillbirth.
Untreated HIV, without antiretroviral therapy, progresses to AIDS, which leaves the immune system unable to fight off infections that a healthy body handles easily. The difference between untreated and treated HIV is, quite literally, the difference between a fatal disease and a manageable chronic condition.
Getting Tested Is the First Step
You can’t cure what you haven’t identified. Many STDs produce no symptoms at all, especially in early stages. Chlamydia and gonorrhea are often completely silent, particularly in women. Syphilis can cause a painless sore that heals on its own, creating the illusion that everything is fine while the infection continues to progress internally.
Testing is available through your primary care doctor, urgent care clinics, community health centers, Planned Parenthood, and many local health departments. Some offer free or low-cost testing. Home test kits are also available for several STDs, though a positive result will still require a visit to get a prescription. If you’re sexually active with new or multiple partners, routine screening is the single most effective thing you can do to catch a curable STD before it causes lasting harm.