HIV prevention, explained
PrEP is medication taken before a possible exposure to help prevent HIV. PrEP stands for pre-exposure prophylaxis.
PrEP medicine helps prevent HIV from establishing an infection after exposure. When taken as prescribed, it is highly effective at preventing HIV. Daily oral PrEP reduces the risk of getting HIV through sex by about 99% and through injection drug use by at least 74%.
PrEP may be available as a daily pill or a long-acting injection, depending on the medication and what is appropriate for you. Follow your clinician’s instructions for the exact schedule. Consistent use and on-time follow-up are important.
An HIV test is needed before starting PrEP, with repeat testing and other follow-up while using it. PrEP prevents HIV; it does not prevent other sexually transmitted infections or pregnancy.
Learn more from CDC PrEP information HIV.gov