PEP must be started as soon as possible, ideally within 2 hours, but no later than 72 hours (3 days) after potential exposure to HIV. The sooner PEP is started, the more effective it will be.
How soon should PEP be started after exposure?
Aug 2024 
Aug 2024 PEP must be started as soon as possible, ideally within 2 hours, but no later than 72 hours (3 days) after potential exposure to HIV. The sooner PEP is started, the more effective it will be.
