PEP (Post-Exposure Prophylaxis) is a 28-day course of anti-HIV tablets taken after sex that could stop you – or someone you’ve had sex with – from getting infected with HIV (for example when a condom has not been used or if it breaks).

To have the best chance of PEP being effective you need to start taking the medication as soon as possible after the possible exposure to HIV – within 24 hours is best, but no later than 72 hours (3 days). After 72 hours, PEP is unlikely to work.

If you think you need to start PEP, please get in touch with us without delay.

PEP is not the same as PrEP (Pre-Exposure Prophylaxis), which is HIV medication that can be taken before sex to prevent HIV infection.

PEP is not a substitute for wearing a condom.