PEP
![PEP (Post-Exposer Prophylaxis)](/congress116th/20210118091034im_/https://www.cdc.gov/hiv/images/basics/pep/cdc-hiv-pep-1000x141.png)
PEP (post-exposure prophylaxis) means taking medicine to prevent HIV after a possible exposure. PEP should be used only in emergency situations and must be started within 72 hours after a recent possible exposure to HIV.
This section answers some of the most common questions about PEP. You can also download PEP materials to share.
Page last reviewed: October 21, 2020