Quick Answer

Trichomoniasis is a curable sexually transmitted infection. The standard treatment is a single dose of either metronidazole or tinidazole, taken by mouth. Both partners must be treated to prevent reinfection, and retesting is recommended three months after treatment regardless of symptom resolution.

  • Trichomoniasis is caused by a parasite and is curable with antibiotics.
  • Metronidazole and tinidazole are the two recommended oral medications.
  • Both sexual partners should be treated at the same time.
  • Avoid alcohol for at least 24 hours after metronidazole or 72 hours after tinidazole.
  • Treatment failure may occur if the parasite is resistant to the drug.
  • Retesting three months after treatment is advised by the CDC.

The Landscape

Trichomoniasis is a common sexually transmitted infection caused by the parasite Trichomonas vaginalis. Unlike viral STIs such as herpes or HIV, trichomoniasis is curable with prescription antibiotics. The parasite infects the urogenital tract, often causing symptoms like itching, discharge, and discomfort during urination or sex. Treatment works by killing the parasite directly, but reinfection is common if sexual partners are not treated together. Understanding the correct medication, dosing, and follow-up steps ensures the infection is fully cleared and reduces the risk of complications or spread.

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.