Is PrEP different from PEP?

PrEP is different from PEP. PEP is taken for up to 28 days after someone has had sex if they think they’ve been exposed to HIV. The main difference between PEP (post– exposure prophylaxis) and PrEP (pre-exposure prophylaxis) is that PEP is taken after sex, if someone thinks they’ve been exposed to HIV, and PrEP is taken on an ongoing basis before sex. More information about PEP is available here.