Key takeaways

  • Emergency PEP needs a medical assessment and a prescription; it is not something to buy over the counter.
  • From 09:00 to 21:00 every day, you can walk in to our clinic near BTS Asok without an appointment.
  • After 21:00, go to a hospital emergency department rather than waiting, especially if you are close to 72 hours.
  • Start as soon as possible, ideally within 24 hours and no later than 72 hours after the exposure.
  • Whoever starts your PEP, finish all 28 days and plan your follow-up HIV tests.

How to get emergency PEP in Bangkok

To get emergency PEP in Bangkok, see a doctor at a sexual health clinic or a hospital emergency department as soon as you can after a possible HIV exposure. Our clinic near BTS Asok and MRT Sukhumvit takes walk-ins for PEP every day from 09:00 to 21:00; outside those hours, a hospital emergency department is the fastest legitimate route.

PEP works best the earlier it starts, ideally within 24 hours and no later than 72 hours. If you are not sure what PEP is, our guide to what PEP is and how the 28-day course works explains the basics.

Why emergency PEP needs a doctor, not a shop

PEP is a 28-day course of HIV medicines, and it is prescription-only. The WHO fact sheet on HIV and AIDS advises that people should seek advice from a clinician when thinking about using PEP.

A doctor checks whether your exposure actually needs PEP, runs a baseline HIV test, and looks at your kidneys, other medicines and hepatitis B status before choosing the right combination.

Where to go for emergency PEP, by time of day

The right place depends mainly on the time and on whether you have any injuries.

Person checking a wristwatch in the evening, working out how many hours have passed since an exposure
Work out roughly when the exposure happened; it helps you and the doctor decide.

Emergency PEP options in Bangkok: situation and what to do

Your situation Where to go Why
Any day, 09:00–21:00 Walk in to our clinic near BTS Asok No appointment needed for PEP
After 21:00 or before 09:00 Nearest hospital emergency department Open around the clock
Close to the 72-hour limit Whichever is open now Do not wait for the morning
Injured, bleeding or unwell Call 1669 or go to an emergency department Urgent care comes first
Sexual assault Hospital emergency department; Tourist Police 1155 if needed Medical care, PEP and support together
Public holiday Message us first, or use an emergency department Confirms where you can be seen

Walking in to our clinic

We are open Monday to Sunday, 09:00 to 21:00, so weekends are covered too. Just arrive; a first name is enough.

Hospital emergency departments after 21:00

Hospital emergency departments in Bangkok are open through the night, and emergency doctors can assess you for PEP. Tell staff early that you need PEP after a possible HIV exposure, and when it happened.

Practice varies: some hospitals may give the full course, others a short starter supply with follow-up at a clinic. Ask how many days of tablets you have before you leave.

Emergency PEP at night: what to do before morning

If our clinic is closed, the question is usually whether to go now or wait until 09:00.

City street at night with taxi lights, the quickest way to reach a hospital after clinic hours
At night, a taxi to the nearest hospital emergency department is often the quickest option.
  1. Note the time of the exposure and count the hours since then.
  2. If waiting would take you near or past 72 hours, go to an emergency department now; earlier is always better.
  3. Bring a list or photos of any medicines you take and, if known, the other person’s HIV status.
  4. Do not delay to clean up or search for more information; our step-by-step plan after a possible HIV exposure covers these first hours.

If more than 72 hours have passed, PEP is not usually recommended; see what to do if it has been more than 72 hours.

Buying PEP in Bangkok: pharmacies, delivery and online sellers

Many people search for where to buy PEP in Bangkok to skip a clinic visit, but PEP should always come with a medical assessment and a baseline HIV test.

Pharmacist behind a counter, where PEP should not be bought without a medical assessment
A pharmacy is not the place to start PEP without a doctor’s assessment.

Ways people try to get PEP and what to consider

Route Assessment and tests Main concern
Sexual health clinic Yes, same visit Opening hours
Hospital emergency department Yes Waiting time; may give a starter supply
Pharmacy without prescription No No baseline test, no check that PEP suits you
Online seller or delivery with no questions Usually no Unknown medicines and no follow-up
A friend’s leftover pills No Wrong or incomplete course

If a service offers to send PEP without asking about your exposure, your health or a test, treat that as a warning sign.

What happens at an emergency PEP visit at our clinic

At HIV PEP Bangkok, an English- or Thai-speaking doctor sees you in a private, confidential room.

Doctor listening to a patient in a quiet clinic office during an emergency PEP assessment
A short, private conversation helps the doctor decide whether PEP is right for you.
  • A consultation about what happened and when, plus baseline tests.
  • Your first dose at the clinic, usually within about an hour of arriving.
  • The full 28-day supply to take home.
  • A medical letter for your own doctor, and reminders for your follow-up tests.

An STI check can be added; see our sexual health clinic services. Visitors may find our Bangkok sexual health guide for travellers and expats useful.

After you start emergency PEP

The full course matters as much as the first dose. Take your tablets at about the same time every day for 28 days.

Tablets and a glass of water, ready for a first PEP dose taken at the clinic
After the first dose, take PEP at about the same time each day for 28 days.

If you started at a hospital with a starter pack, arrange the rest of your course before the tablets run out. Our guide to the 28-day PEP course from first dose to follow-up explains each stage.

After the course you will need follow-up testing, usually around 4 to 6 weeks and again at about 3 months after the exposure. Our article on HIV testing after finishing PEP sets out the timing, and PEP is very effective but not 100%, as our guide on whether PEP can fail and what the evidence shows explains.

Frequently asked questions about emergency PEP in Bangkok

Can PEP be delivered to my hotel or condo in Bangkok?

PEP should start with a medical assessment and a baseline HIV test, so the safest route is to be seen in person. Be cautious with anyone offering to send PEP without asking about your exposure or health.

What should I bring to an emergency PEP visit?

Bring the time of the exposure, a list or photos of any medicines you take, and anything you know about the other person’s HIV status. At our clinic, a first name is enough.

Will a hospital emergency department give me all 28 days of PEP?

It varies. Some hospitals may give a starter supply and ask you to continue at a clinic, so check how many days you have before you leave.

Is it safe to take PEP pills a friend has left over?

No. Leftover tablets may be the wrong combination or not enough for 28 days, and you would miss the baseline test and follow-up.

If you think you need emergency PEP now, you can walk in any day between 09:00 and 21:00, or contact our Bangkok clinic by LINE, WhatsApp or phone if you would like to ask a question first.