HIV PEP & PrEP clinic · Koh Samui

Exposed to HIV? Act within 72 hours.

Had a condom break, unprotected sex or a needle-stick injury? Post-exposure prophylaxis (PEP) can prevent HIV if started within 72 hours. Message us now and a doctor can see you today, discreetly.

  • Same-day appointments
  • Private & confidential
  • English-speaking doctors
  • Walk-ins welcome
Silhouette of a person on a quiet beach at dusk
12 hours ago
60 h left to start PEP Best time to start — contact us now.
Message a doctor now

A guide only — not medical advice.

How PEP works

From exposure to all clear.

PEP is a 28-day course of HIV medicines. Started within 72 hours of exposure, it greatly reduces the chance of infection.

  1. 0 hours

    A possible exposure

    A condom broke, sex without a condom, shared needles or a needle-stick injury. From this moment, the 72-hour clock is running.

  2. < 24 hours

    Message or call us

    Tell us roughly when it happened. The earlier PEP starts, the better it works — ideally within hours.

  3. 1 visit

    Consult, test, first dose

    A private risk assessment with a doctor, a rapid baseline HIV test, and your first dose — all in the same visit.

  4. 28 days

    Complete the course

    One daily dose for 28 days. We explain possible side effects and stay reachable if you have questions.

  5. 3 months

    Follow-up testing

    Repeat HIV tests — usually around 6 weeks and 3 months after the exposure — confirm that PEP worked.

Services

Prevention, testing and follow-up.

Straightforward care from doctors who see these situations every day. No referral needed.

Why people choose us

Care without judgement, close to where you are.

We know this moment can feel frightening. You will talk to a doctor in private, get tested, and leave with your medication and a clear plan — without judgement, and without anyone else needing to know.

  • Confidential

    A private room. Nothing is shared without your consent.

  • Same day

    Fast appointments, so PEP can start without delay.

  • No judgement

    LGBTQ+-inclusive care for residents and travellers.

  • Travel-ready

    A written summary to continue care at home.

Window to start PEP
72h
Length of the course
28days
Final follow-up test
3months

Find us

Right here on Koh Samui.

Whether you live on the island or are here on holiday, we are easy to reach.

The Big Buddha temple on Koh Samui
Big Buddha, Koh Samui
Aerial view of a beach on Koh Samui
Address
Clinic address
Koh Samui, Surat Thani, Thailand
Hours
Mon – Sun: 09:00 – 20:00 Outside hours: message us on WhatsApp
Languages
English · ภาษาไทย
Directions

The map loads from Google only when you ask for it.

Questions

Ask anything. We’ve heard it all.

Tap a question to see the answer. Still unsure whether you need PEP? Message a doctor privately.

Ask on WhatsApp
What is HIV PEP?

PEP (post-exposure prophylaxis) is a short course of HIV medicines taken after a possible exposure to HIV to stop the virus from establishing an infection. The course lasts 28 days and the medicine is taken every day.

How soon do I need to start PEP?

As soon as possible — ideally within a few hours, and no later than 72 hours (3 days) after the exposure. The sooner PEP is started, the better it works. After 72 hours PEP is not recommended, but you should still get tested and speak with a doctor.

When should I consider PEP?

For example: a condom broke or slipped, you had sex without a condom with someone whose HIV status you don’t know, you shared needles or injecting equipment, you experienced sexual assault, or you had a needle-stick injury. A doctor will assess your risk — if your partner is HIV-positive and has an undetectable viral load on treatment, HIV is not transmitted through sex and PEP may not be needed.

How effective is PEP?

When started quickly and taken every day for the full 28 days, PEP greatly reduces the chance of HIV infection. No method is 100% effective, and missing doses lowers protection, so it is important to finish the course and attend follow-up testing.

Does PEP have side effects?

Modern PEP medicines are generally well tolerated. Some people have mild nausea, tiredness, headache or an upset stomach in the first days, which usually settles. Tell the doctor about any other medicines or supplements you take so they can check for interactions.

What happens at my visit?

You will have a private consultation about what happened, a rapid baseline HIV test and any other tests the doctor recommends. If PEP is right for you, you take your first dose at the clinic and leave with your medication and a clear follow-up plan.

When do I need to test again after PEP?

Follow-up HIV testing confirms that PEP worked. Testing is usually recommended around 4–6 weeks and again about 3 months after the exposure; your doctor will confirm the right schedule for you.

I’m only on holiday in Samui. Can I finish the course at home?

Yes. We make sure you have the medication you need and a written summary of your treatment, so you can complete the course and arrange follow-up testing with a doctor in your home country.

What is the difference between PEP and PrEP?

PEP is an emergency treatment taken after a possible exposure. PrEP (pre-exposure prophylaxis) is taken before possible exposures by people who may be at ongoing risk. If you have needed PEP more than once, ask us whether PrEP could suit you.

Is my visit confidential?

Yes. Your consultation, test results and personal details are kept confidential and are not shared without your consent.

Guides

Know your options before you need them.

All articles

Contact

Talk to a doctor in confidence.

The fastest way to reach us is WhatsApp or a phone call. You can also send the form and we will get back to you as soon as possible.

If you cannot reach us and you are close to the 72-hour limit, go to the emergency department of the nearest hospital and ask for HIV PEP.

Private message
What can we help with?
When was the possible exposure?
How should we reach you?