Pre-exposure prophylaxis (PrEP) is a medication that reduces the risk of contracting HIV. It’s for HIV negative people who are more at risk of contracting the virus. 

PrEP comes as a course of tablets that can be taken every day to cover unplanned sexual activity or taken before or after sex - this is called event-based dosing. It’s available free from NHS sexual health clinics.

The best way to prevent HIV infection during sex is to use condoms consistently and correctly.


For more information go to:


Helen Burkitt, Senior Sexual Health Nurse at SH:24
Written by Helen Burkitt. Senior Sexual Health and Contraception Nurse

Last updated at: 29 March 2022

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