Chlamydia is cured with a short course of antibiotics, most commonly a seven-day regimen taken by mouth. The standard treatment has a cure rate above 95% for genital infections, and most people clear the infection completely within one to two weeks of starting medication. You cannot cure chlamydia on your own, with home remedies, or by waiting it out. A prescription is required.
The Standard Antibiotic Regimen
The CDC-recommended first-line treatment for chlamydia is doxycycline, taken twice daily for seven days. A delayed-release formulation that only requires once-daily dosing for seven days is equally effective. This is the go-to option for infections of the genitals, rectum, or throat.
A single-dose alternative exists and was previously a popular choice because of its convenience. It clears about 90 to 95% of genital chlamydia infections, which sounds high but falls short of the seven-day course. For rectal chlamydia specifically, the single-dose option drops to roughly 75% effectiveness. That gap is one reason the seven-day regimen became the preferred treatment.
If you have an allergy or another reason you can’t take the standard medication, your provider can prescribe an alternative. Pregnant individuals also need a different antibiotic, since doxycycline isn’t safe during pregnancy.
What to Expect During Treatment
You take the pills at home. There are no injections or clinic visits required beyond the initial prescription. Most people tolerate the medication well, though stomach upset and sun sensitivity are common side effects. Taking it with food (but not dairy) and staying out of direct sunlight helps.
Symptoms like unusual discharge, burning during urination, or pelvic discomfort typically start improving within a few days. You should avoid all sexual contact for at least seven days after completing treatment. If you took a single-dose option, the waiting period is still seven days from the day you took it. Having sex too soon risks passing the infection to a partner before it’s fully cleared from your body.
Why Your Partner Needs Treatment Too
Curing your own infection is only half the equation. If your sexual partner isn’t treated at the same time, you’re likely to get reinfected the next time you have sex. This is the single most common reason people end up with chlamydia a second time: not because the antibiotics failed, but because the bacteria passed right back from an untreated partner.
Expedited partner therapy, where your provider writes a prescription for your partner without requiring them to come in for a separate visit, reduces the risk of reinfection by about 29% compared to simply asking your partner to schedule their own appointment. Not every state allows this, but it’s worth asking about. At minimum, any recent sexual partners need to know about the diagnosis so they can get tested and treated.
Follow-Up Testing
A “test of cure,” meaning a follow-up test to confirm the infection is gone, isn’t necessary for everyone. If you completed the full seven-day course and your symptoms resolved, the treatment almost certainly worked. However, retesting is recommended about three months after treatment to check for reinfection, which is common. This isn’t testing whether the antibiotics worked. It’s checking whether you picked up chlamydia again from an untreated partner or a new exposure.
If you’re pregnant, a test of cure roughly four weeks after finishing antibiotics is standard to confirm clearance before delivery.
Rectal Chlamydia Is Harder to Clear
Chlamydia in the rectum is more stubborn than genital infections. The single-dose treatment fails about one in four times for rectal cases, which is why the seven-day doxycycline course matters here especially. Research suggests the bacteria may survive at higher levels in colorectal tissue, making shorter treatments less reliable. If you were treated for rectal chlamydia, follow-up testing to confirm clearance is a good idea.
Antibiotic Resistance Is Not a Major Concern Yet
Unlike gonorrhea, which has developed alarming resistance to multiple drug classes, chlamydia remains highly susceptible to standard antibiotics. Surveillance studies across multiple countries have found almost no resistance mutations in chlamydia samples. A large Portuguese study of over 500 positive samples found zero evidence of resistance to the main class of antibiotics used for treatment. A Spanish study of 73 clinical samples found no resistance mutations at all.
Isolated cases of lab-observed resistance exist, but they’re extremely rare and haven’t translated into widespread treatment failures. For now, the standard regimen works reliably.
What Happens If Chlamydia Goes Untreated
Chlamydia often causes no symptoms at all, which is why many people don’t realize they have it. Left untreated, the infection doesn’t resolve on its own. In women, it can spread to the uterus and fallopian tubes, causing pelvic inflammatory disease, chronic pelvic pain, and fertility problems. In men, it can cause painful swelling in the tube that carries sperm, which can also affect fertility. Untreated chlamydia during pregnancy increases the risk of preterm delivery and can pass to the baby during birth, causing eye infections or pneumonia.
The good news is that treating chlamydia early, before it causes complications, is straightforward and highly effective. A single week of antibiotics resolves the vast majority of cases completely.