How often do I need to take PrEP for it to be effective?

Written By medsEXPERT Assistant

The use of daily PrEP is highly effective if taken every day, less effective if pills are not taken daily. When starting PrEP, it is estimated that a minimum of 7 days of daily dosing is needed to achieve protective concentrations for receptive anal sex, 21 days for vaginal sex.

https://lalgbtcenter.org/health-services/hiv-related-services/prep-hiv-prevention-pill

medsEXPERT Assistant
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