PrEP contains two medicines that interfere with HIV's ability to grow and take hold in the body if a person is exposed to HIV.
When taken every day, PrEP can provide a high level of protection against HIV, and is even more effective when it is combined with condoms and other prevention options. In several studies of PrEP usage, the risk of getting HIV was reduced by up to 92% for those who took the pill consistently compared to those who did not take the pill at all.
People who use PrEP must take the pill every day and return to their health care provider every 3 months for lab monitoring, risk review, and prescription refills.