In the know

HIV while on PrEP

It is possible to contract HIV while on PrEP, especially if you frequently forget to take the pill. During your follow-up visits with your healthcare provider while on PrEP, your doctor will routinely you for HIV to determine your current HIV status.
Unsafe sex while taking PEP could let more HIV into your body, making PEP much more likely not to work. If after taking PEP someone’s stayed HIV negative and then has unsafe sex again, they can become infected just like any other HIV negative person.
If you use PrEP consistently and correctly, it is 92%–99% effective in reducing your HIV risk, whether you use a condom or not. PrEP does not protect against other STIs and does not prevent pregnancy. (Condoms do protect against HIV and other STIs.)