Quick Answer

Trichomoniasis is cured with a single dose or a short course of prescription antibiotics, either metronidazole or tinidazole. These medications kill the parasite Trichomonas vaginalis, with cure rates above 90 percent when taken as directed. Retesting is recommended three months after treatment to confirm the infection is gone.

  • Metronidazole and tinidazole are the only antibiotics approved to cure trichomoniasis.
  • A single oral dose of either drug often is enough for a full cure.
  • Symptoms usually improve within a few days but may take up to a week to disappear.
  • Retesting three months after treatment is recommended because reinfection is common.
  • Treatment failure is rare but can happen if the parasite is resistant to the drug.
  • Sexual partners should also be treated to prevent reinfection.

The Landscape

Trichomoniasis is a common sexually transmitted infection caused by the parasite Trichomonas vaginalis. Unlike viral STIs such as herpes or HIV, this infection is curable with the right antibiotic. The medications work by targeting the parasite's DNA and metabolism, quickly clearing it from the body. Without treatment, trichomoniasis can persist for months or years, increasing the risk of other infections and complications during pregnancy. Understanding how the cure works and what steps follow is key to making sure the infection does not return.

Treatment Windows by Infection

Bacterial infections clear with antibiotics measured in days: a single 500 mg intramuscular ceftriaxone dose for gonorrhea (doxycycline is added only if chlamydia has not been ruled out), seven days of doxycycline for chlamydia, penicillin injections for syphilis staged by duration. Viral infections play a longer game — suppressive antivirals for herpes, daily ART driving HIV to undetectable, and 8–12-week antiviral courses curing over 95% of hepatitis C cases.

Related Questions

⚕️ This page is educational and does not replace advice from a licensed clinician. If you may have been exposed to an STI, get tested — most infections are manageable, and many are fully curable.

Sources & Further Reading

Figures reflect CDC surveillance and WHO estimates; they are population statistics, not personal risk predictions.