PrEP cost on Koh Samui is made up of four parts: a doctor's consultation, some starting tests, the monthly pills and a check-up every three months. In 2026, the pills themselves are usually the smallest part of the bill, and generic PrEP in Thailand is often far cheaper than in many Western countries.
Below are typical market ranges found across Thai clinics. Prices change, so treat them as a guide and message us for our current price.
What PrEP is and why the cost has several parts
PrEP (pre-exposure prophylaxis) is medicine taken by people who do not have HIV to lower their chance of getting it. It is for ongoing prevention, unlike PEP, which is an emergency course after a risk.
PrEP is not just a pill purchase. Before you start, a doctor checks that you do not already have HIV and that your kidneys are healthy. Every few months you have a quick review and repeat tests. That safety net is part of what you pay for.
If you are not sure which one you need, our guide on how PEP compares with PrEP and condoms explains the difference in plain language.
PrEP cost breakdown (typical 2026 ranges)
These ranges come from published prices at private clinics across Thailand. Island clinics are often at the middle or upper end, and packages can bundle several items together.
PrEP cost breakdown on Koh Samui and in Thailand (typical 2026 ranges)
| Part of PrEP | What it covers | How often | Typical range (THB) |
|---|---|---|---|
| Doctor consultation | Risk review, choosing the right type of PrEP, advice | First visit, then at check-ups | About 500–1,000 |
| Starting tests | HIV test, kidney function, hepatitis B, often syphilis | Once, before starting | About 1,500–4,000 |
| Monthly supply (generic pills) | 30 tablets of a generic combination | Every month | About 500–1,500 |
| Monthly supply (original brand) | 30 tablets of a branded product | Every month | About 1,500–3,500 |
| 3-monthly check-up | HIV test, kidney check as advised, STI screen | Every 3 months | About 1,000–3,500 |
As a rough guide, the first month is usually the most expensive because of the starting tests. After that, the monthly cost is mostly the pills, plus a check-up every three months.
Is PrEP free in Thailand?
For Thai citizens, PrEP has been included in the national Universal Health Coverage scheme since around 2020–2021, at registered services. Foreign visitors and most expats usually pay, even at public hospitals, unless their insurance covers it.
Daily, on-demand or injectable PrEP?
There is more than one way to take PrEP. Which suits you depends on your body, the kind of sex you have and how often you need protection. A doctor will assess your situation and explain how to take it.
PrEP options compared
| Type | What it is | Who it tends to suit | Cost level |
|---|---|---|---|
| Daily pills | One pill every day, taken continuously | Most people, including anyone having vaginal or front-hole sex | Low to moderate |
| On-demand (event-based) pills | Pills taken around sex on a schedule a doctor explains | Mainly cisgender men who have sex with men with planned, less frequent sex | Lower, as fewer pills are used |
| Injectable PrEP | A long-acting injection given by a clinic every few months | People who struggle with pills | Much higher; ask whether it is available |
On-demand PrEP is not suitable for everyone. It is not recommended for vaginal or front-hole sex, or for people with hepatitis B, so please do not switch methods without advice. The NHS has a clear overview of who PrEP is for and how it is taken.
Can I just buy PrEP at a pharmacy in Thailand?
You may see PrEP pills on pharmacy shelves in Thailand, and the price can look tempting. The problem is not the pill itself. It is starting without an HIV test and kidney check.
If someone already has HIV and takes PrEP alone, the virus can become resistant to those medicines, which makes future treatment harder. The kidney check matters because PrEP can affect kidney function in some people. For the same reasons, our guide to buying PEP from a pharmacy in Thailand recommends a doctor's assessment first.
Private clinic vs public hospital for PrEP
Both routes can work well. The main differences for visitors are cost, waiting time and how easy follow-up is.
Private vs public PrEP on Koh Samui
| Private clinic | Public hospital | |
|---|---|---|
| Typical cost | Higher, but often clear packages | Lower for Thai citizens; foreigners usually pay |
| Waiting time | Usually short, often same day | Can be several hours |
| Language | English commonly spoken | Varies |
| Privacy | Smaller, more discreet | Busier shared areas |
| Follow-up | Often by message, flexible times | Usually a new visit each time |
Hidden costs to ask about
A cheap monthly pill price does not always mean the cheapest PrEP overall. Before you commit, ask these questions:
- Are the starting tests included, or charged separately?
- Is the consultation fee charged again at every refill?
- Does the check-up include an STI screen, or is that extra?
- Can I buy two or three months at once if I am travelling?
- Will I get a written record to show a doctor at home?
PrEP on Koh Samui: local tips
If you are staying on the island for weeks or months, PrEP fits easily into island life. Plan your refills and check-ups around trips to Koh Phangan, Koh Tao or home.
- Start before a trip if you can. Daily PrEP needs a lead-in period before it protects fully. A doctor will tell you how long for your situation.
- Keep a written record. It makes it easier to continue PrEP with a doctor in another country.
- Combine visits. A 3-monthly check-up is a good moment for an STI screen. See typical STD test prices on Koh Samui.
Our HIV PrEP service on Koh Samui covers the first visit, refills and check-ups. The HIV and STI testing service handles the regular tests. If you are on Phangan or Tao, our guide to PEP and testing on Koh Phangan and Koh Tao explains travel times.
Had a risk before starting PrEP?
If you had a possible HIV exposure in the last 72 hours, PEP comes first, and PrEP can follow afterwards. See what PEP typically costs on Koh Samui and act quickly.
Frequently asked questions
How much is PrEP per month in Thailand?
Generic PrEP pills are typically about 500–1,500 THB a month, and branded products cost more. Add consultation and testing costs for the full picture, and message us for our current price.
Why do I need tests before starting PrEP?
To make sure you do not already have HIV and that your kidneys are healthy. Starting PrEP with undiagnosed HIV can cause drug resistance.
Can I get several months of PrEP at once?
Often, yes, if you are travelling and your tests are up to date. Ask the doctor, as it depends on your check-up schedule.
Is injectable PrEP available on Koh Samui?
Availability varies across Thailand. Ask us whether it is currently available and what it would cost.
Does travel insurance cover PrEP?
Usually not, because PrEP is preventive care rather than emergency treatment. Check your policy wording.
Get a clear PrEP price today
PrEP is one of the most effective ways to prevent HIV, and in Thailand it is often more affordable than people expect. A doctor can check which type suits you and give you a full price with nothing hidden. You can message a doctor privately on WhatsApp to ask about starting PrEP and our current price.