What is Trichomoniasis? 

Trichomoniasis (or “trich”) is a prevalent sexually transmitted disease (STD). It is caused by infection with a protozoan parasite called Trichomonas vaginalis. Although symptoms of the disease vary, most people who have the parasite cannot tell they are infected.

Additional Information and Facts

CDC Fact Sheet on Trichomoniasis

Testing and Treatment

What is the treatment for trichomoniasis?

Trichomoniasis can be treated with medication (either metronidazole or tinidazole). These pills are taken by mouth. It is safe for pregnant women to take this medication. It is not recommended to drink alcohol within 24 hours after taking this medication.

People who have been treated for trichomoniasis can get it again. About 1 in 5 people get infected again within 3 months after receiving treatment. To avoid getting reinfected, make sure that all of your sex partners get treated. Also, wait 7- 10 days after you and your partner have been treated to have sex again. Get rechecked if your symptoms come back.

Page last updated 12/12/2018

Content source: 

Centers for Disease Control and Prevention. (2021, January 19). STD Facts - Trichomoniasis. Centers for Disease Control and Prevention.  

Centers for Disease Control and Prevention. (2017, January 4). CDC - Trichomoniasis Treatment. Centers for Disease Control and Prevention.

Division of STD Prevention, National Center for HIV/AIDS, Viral Hepatitis, STD, and TB Prevention, Centers for Disease Control and Prevention