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Can HIV be prevented after three days of unprotected sex?

This Premium Q&A, reviewed and published, features a real conversation between an iCliniq user and a physician.

Patient's Query

Hi,

I had sexual (vaginal only) intercourse three days back with a woman whom I had known for a few days. She looked like a normal regular kind of girl. So I had sex without protection. But after the sex, I doubt she has other sex partners also, and she often has sex. So now I am feeling unsafe. And somewhere, I read that within 72 hours of unprotected sex, there are some medical precautions to prevent HIV?

Please suggest something.

Thank you.

Answered by Dr. Nidhin Varghese

Education:

MBBS

Professional Bio:

Dr. Nidhin Varghese is a Dermatologist committed to providing expert skin care and improving patient confidence. He specializes in treating acne, pigmentation, hair and nail disorders, and skin infections, combining advanced techniques with personalized care to achieve healthy and glowing skin for every patient.

This doctor is not available for online consultations on the platform anymore.

Hello,

Welcome to icliniq.com.

I read your query and understand your concern. Post-exposure prophylaxis (PEP) is a combination of three drugs. You can take them once or twice a day for the next 28 days. For adults, the suggested dosage is Tenofovir Disoproxil 300 mg and Emtricitabine 200 mg (these two drugs come in one pill) once daily. A third drug, either Raltegravir 400 mg twice daily or Dolutegravir 50 mg daily.

I hope I have answered your question.

Let me know if I can assist you further.

Thank you.

Medically reviewed by Dr. K. Shobana
Published At June 14, 2022
Reviewed At December 12, 2025

Education:

MBBS

Professional Bio:

Dr. Nidhin Varghese is a Dermatologist committed to providing expert skin care and improving patient confidence. He specializes in treating acne, pigmentation, hair and nail disorders, and skin infections, combining advanced techniques with personalized care to achieve healthy and glowing skin for every patient.

This doctor is not available for online consultations on the platform anymore.

Education:

BDS

Professional Bio:

Dr. K. Shobana is a Dental Surgeon specializing in oral health and dental care. She is skilled in preventive dentistry and provides oral hygiene education. She can do restorative treatments such as fillings and crowns. She can handle periodontal problems such as gum diseases and periodontitis. She can do root canal treatment.

This doctor is not available for online consultations on the platform anymore.

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

Education:

MBBS

Professional Bio:

Dr. Nidhin Varghese is a Dermatologist committed to providing expert skin care and improving patient confidence. He specializes in treating acne, pigmentation, hair and nail disorders, and skin infections, combining advanced techniques with personalized care to achieve healthy and glowing skin for every patient.

This doctor is not available for online consultations on the platform anymore.

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