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Started PEP after 66 hours of unprotected sex. Will it be helpful?

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Patient's Query

Hi doctor,

I had unprotected sex and have consulted a doctor after that. He told me to go for PEP immediately. So, I started PEP after three days of exposure with one Tablet of Lamivudine and Zidovudine along with one Efavirenz tablet. I have taken PEP after 66 hours of exposure. Will it be helpful? Please let me know.

Answered by Dr. Bharat Udey

Hello,

Welcome to icliniq.com.

  • PEP (post-exposure prophylaxis) is highly effective if taken within first 12 hours of exposure. However, efficacy is high enough if taken within 72 hours of exposure as well. Efficacy decreases afterwards.
  • As you have started PEP within 66 hours of unprotected coitus, it is effective and need not to be worried about it.

For further doubts consult a sexologist online.

Answered by

Dr. Bharat Udey

Medically reviewed byiCliniq medical review team

Published At July 15, 2016
Reviewed AtApril 12, 2025

Same symptoms don't mean you have the same problem. Consult a doctor now!

Dr. Bharat Udey

Dr. Bharat Udey

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