The most common treatment for trichomoniasis is to swallow one mega-dose pill of either metronidazole (Flagyl) or tinidazole (Tindamax). While there are medicated creams or gels that can be inserted in the vagina to treat the infection, taking the medication by mouth is much more effective.
You should not drink alcohol while taking the medicine and for 48 hours afterward. Doing so can cause severe nausea and vomiting.
Avoid sexual intercourse until treatment has been completed. Sexual partners should be treated at the same time, even if they have no symptoms.