What is PEP?
PEP stands for Post-Exposure Prophylaxis. It’s a medication that, if taken within 72 hours of possible exposure to HIV (such as through unprotected sex or a condom breaking), can help prevent the virus from transmitting and establishing an infection.
How do I take PEP?
PEP is most effective when started as soon as possible after potential exposure to HIV—ideally within 72 hours. Studies suggest it can reduce the risk of infection by up to 80-90% when taken correctly and for the full 28-day course. Starting PEP quickly is key to its success.
What do I need to do to take it?
To be prescribed PEP, you need to meet certain criteria, and only a doctor can determine if you qualify.
The key requirement is that PEP must be started within 72 hours of potential HIV exposure. After this window, PEP won't be an option.
You’ll need to have an HIV test both before starting and after completing the 28-day treatment.
Keep in mind, PEP doesn’t protect against other STIs or unwanted pregnancies. Using condoms is still the best way to safeguard against these risks. Regular STI screenings are also important for maintaining your sexual health.
Where can I get more information?
i-Base
HIV i-Base is a treatment activist group. Committed to providing timely and up to date information about HIV treatment to HIV positive people and to health care professionals.
THT
The Terrance Higgins Trust is a British charity that campaigns about and provides services relating to HIV and sexual health.
aidsmap
NAM Publications (known as aidsmap) is a charity based in the United Kingdom. Who work to change lives by sharing information about HIV & AIDS.