PEP is highly effective when started within 72 hours of exposure and taken as prescribed for 28 days, but it’s not 100% foolproof. Failures are rare and often linked to delayed initiation, missed doses, or ongoing exposures during treatment. If someone tests positive, it’s typically detected within 1-3 months post-PEP Show Full Answer

PEP is highly effective when started within 72 hours of exposure and taken as prescribed for 28 days, but it’s not 100% foolproof. Failures are rare and often linked to delayed initiation, missed doses, or ongoing exposures during treatment. If someone tests positive, it’s typically detected within 1-3 months post-PEP. Regular follow-ups with your healthcare provider are crucial for accurate testing and guidance.

 This AI-generated response comes from myHIVteam and other selected sources. It is not a substitute for medical advice. Always ask your doctor about specific health concerns.

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