Post-Exposure Prophylaxis (PEP)
If you don’t have HIV and you think you had a one-time exposure to it (e.g. condom broke, sexual assault), you can take post-exposure prophylaxis (PEP) to stop the virus from taking hold in your body. PEP must be started as soon as possible or at least within 72 hours of being exposed to HIV, and it must be taken daily for 28 days. PEP is only for emergency cases.
If you want to take a pill for prevention before potential exposure, learn more about pre-exposure prophylaxis (PrEP).