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



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.





Welcome to dr.sitehome.info.

  • 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 –> https://www.dr.sitehome.info/ask-a-doctor-online/sexologist

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