What does PrEP involve?

PrEP is most commonly taken as a once-a-day-pill. This pill is a combination of two drugs – tenofovir and emtricitabine. This is one of the same pills commonly taken by someone with HIV as an HIV treatment. Trials have shown that PrEP works best when it is taken regularly – this ensures that levels of drug in the blood are high enough to be protective against HIV.