Can I switch between daily and event-based dosing?

PrEP dosing is very easy to change.

PrEP can adapt to your needs at different times. You can stop and restart PrEP, or change the way you take it. 

Talk to your clinic about ways of taking PrEP and about how to stop or restart when you need to.

Please see these links.

• How to start and stop PrEP
• Daily PrEP dosing
• Event-based dosing
• Examples of event-based 2:1:1 and 2:7 dosing

PrEP and hepatitis B

Everyone who has active hepatitis B needs to take PrEP every day and not miss doses.

This is because PrEP is also treating hep B and keeping it under control.

Stopping PrEP can lead to rapid inflammation in the liver. 

This can be very serious. It can lead to hospitalisation and in rare cases can be fatal.

Last updated: 1 February 2025.