- PEP is a 28-day course of HIV medicines that must start within 72 hours of exposure.
- The earlier you start, the better it works. Aim for within 24 hours if possible.
- You can start PEP in Thailand and continue the course after returning to India.
- PEP needs a doctor's assessment, a baseline HIV test and follow-up testing.
It's the morning after. You are in a hotel room in Bangkok, Pattaya or Phuket, or perhaps already on a flight home, and the reality hits: the sex was unprotected, or the condom broke. Your mind races between panic and denial. Here is the single most useful fact you need right now: if the exposure happened within the last 72 hours, there is an emergency treatment that can stop HIV from taking hold. It is called PEP.
What Is PEP?
Post-Exposure Prophylaxis (PEP) is a short course of antiretroviral medicines taken for 28 days after a possible HIV exposure. When HIV enters the body, it needs some time to infect cells and spread. PEP blocks the virus during that early period, giving the immune system a chance to clear it before infection becomes permanent.
Current guidelines usually recommend a three-drug combination taken once daily. Your doctor chooses the exact regimen after checking your kidney function and other medicines. You can learn more in our explainer on the science of the 72-hour PEP window.
Why the Clock Matters So Much
PEP is not a morning-after pill you can take whenever convenient. Its effectiveness drops as each hour passes. Starting within 24 hours is ideal, and 72 hours is the outer limit. After that, doctors do not recommend PEP, because the virus has likely had time to establish itself if transmission occurred.
This is why waiting to "see if symptoms appear" or "test first" is a mistake. A test taken today cannot detect an infection from last night. PEP decisions are made on the basis of the exposure, not a test result.
If You Are Still in Thailand
Thailand has good access to HIV prevention services. Practical options include:
- Hospital emergency departments: Major private and public hospitals in Bangkok, Pattaya, Phuket and Chiang Mai can assess you and start PEP, at any hour.
- The Thai Red Cross Anonymous Clinic in Bangkok: A well-known centre offering HIV testing, PEP and PrEP.
- Private sexual health clinics: Several clinics in tourist areas offer same-day PEP.
Take the first dose there, and ask for a written prescription and enough medicine to reach home. Keep the packaging, because your doctor in India will need the exact drug names.
If You Have Already Returned to India
If you are back home and still within 72 hours, you can start PEP in India. Large government hospitals and private specialists provide it. Through our clinic, Dr. Yuvraj Monga can assess you online quickly, and PEP can be delivered to most Indian cities within 12 to 24 hours. If you are very close to the 72-hour mark, go to the nearest hospital emergency department in person rather than waiting for a delivery.
What Happens After You Start PEP
Baseline tests
Before or at the start of PEP, you will usually have an HIV test, a kidney function test and hepatitis B screening. These tests are not meant to diagnose last night's exposure; they confirm that PEP is safe for you.
Daily doses for 28 days
Take your tablets at the same time each day. Set a phone alarm. Missing doses lowers protection, so if one slips, contact your doctor for advice.
Side effects
Modern PEP is generally well tolerated. Some people feel mild nausea, headache or tiredness in the first week. Our guide on common PEP side effects and how to manage them covers practical tips.
Follow-up testing
Your doctor will repeat HIV testing after you finish PEP, typically around 6 weeks and again around 3 months after the exposure. STD testing for gonorrhoea, chlamydia and syphilis is also important.
How the EXACT Program Guides You Through PEP
Starting PEP abroad and finishing it at home can feel confusing. Our EXACT program keeps every step in one place, from the first urgent assessment to your final negative result.
Many clients start PEP in Thailand and then contact us for continuity. We review their regimen, arrange supply in India, manage side effects, and support the anxiety that often comes with the 28 days.
Don't Let Embarrassment Cost You Time
The biggest barrier to PEP is rarely availability. It is hesitation, embarrassment or hoping the problem will disappear. Doctors who provide PEP see these situations daily and are there to help, not judge. If you are inside the 72-hour window, the most important thing you can do for your future health is to act today.
Frequently Asked Questions
Can I buy PEP over the counter in Thailand?
PEP requires a doctor's assessment and prescription. Hospital emergency departments, private clinics and the Thai Red Cross Anonymous Clinic in Bangkok can assess you and provide it.
I started PEP in Thailand. Can I continue it in India?
Yes. Bring your prescription and remaining medicines. Dr. Monga can review your regimen online and arrange continued supply in India so you complete all 28 days without gaps.
Does PEP guarantee I won't get HIV?
No medicine is 100% effective, but PEP taken early and completed correctly greatly lowers the risk. Follow-up testing confirms the outcome.
Related Reading
- The science of the 72-hour PEP window
- Why every hour matters when starting PEP
- Common PEP side effects and how to manage them
- Whether PEP guarantees protection
- When to test after finishing PEP
- Your full plan after returning from Thailand
Medical note: This article is for education and does not replace a personal consultation. If your exposure happened within the last 72 hours, seek PEP immediately at the nearest hospital or contact a specialist. If you are having thoughts of harming yourself, call Tele-MANAS on 14416 in India, the Mental Health Hotline 1323 in Thailand, or your local emergency number.
