Thailand is one of the easier places in Asia to keep yourself supplied with medicine, which is part of why so many people retire, work or travel here long term. Retail pharmacies are common in the cities and tourist areas, and most everyday medicine is close to hand. The system works differently from home, though. The brands are unfamiliar, the rules on bringing your own supply have detail worth knowing, and the climate is hard on anything you store. This guide covers how to buy, bring in and keep your medicines going while you are in Thailand.

Key facts

  • Ask for the active ingredient and strength, not just the brand you used at home.
  • Most everyday medicine is sold over the counter at retail pharmacies; some medicines need a prescription, and controlled medicines are restricted.
  • To bring your own supply in, keep medicines in their original packaging and carry a copy of your prescription or a doctor’s letter.
  • The Thai FDA allows roughly a 30-day personal-use supply of medicines containing certain controlled substances; up to about three months needs an advance permit.
  • Narcotic medicines need separate Thai FDA permission, and cannabis and some products are restricted.
  • Store medicines cool, dry and out of direct sun. Thailand’s heat and humidity degrade tablets faster than a temperate climate.
  • For an ongoing condition, use a doctor, clinic or hospital pharmacy rather than relying only on counter advice.

Can foreigners buy medicine in Thailand?

Yes. Foreigners can buy medicine at Thai pharmacies the same way residents do. Many everyday medicines are available over the counter; some require a prescription, and controlled medicines are restricted and checked against Thai FDA rules.

Thailand has a dense network of pharmacies, from small independents on side streets to familiar chains in the shopping malls of Bangkok, Chiang Mai, Phuket, Pattaya and Koh Samui. In any city or large town you are rarely far from one, and many keep long hours into the evening. A good number have someone who speaks enough English to help, especially in areas used to visitors, though English support, stock and opening hours vary by location.

For everyday needs, a retail pharmacy is usually the first stop. It helps to come prepared: know the active ingredient and strength of what you want, not just the brand from home, and bring the empty box or a clear photo if you can. The staff can then match you to the local equivalent far more easily.

Pharmacy, clinic or hospital: which should I use?

Use a retail pharmacy for minor, familiar needs. Use a clinic or hospital pharmacy for anything that needs assessment, a new or ongoing condition, or a repeat of a long-term medicine. Thailand has plenty of both, and private hospitals in the cities and tourist areas are used to international patients.

Private hospitals often have English-speaking staff and their own pharmacies on site. It is worth knowing your options before you need them: note a nearby pharmacy, a clinic for routine matters, and a hospital for anything urgent. If you take a regular medicine, a single visit to a doctor early on can set up a clear record of what you take, which makes every refill afterwards simpler.

What does medicine cost in Thailand?

Prices vary by pharmacy type and by brand. The same medicine can cost different amounts at a hospital pharmacy, a chain pharmacy and an independent one, and an original brand costs more than a generic of the same active ingredient. Ask for the active ingredient, the strength and the generic option before comparing prices.

Much of what is sold is a generic, the same active ingredient as a well known brand without the brand price, which is the everyday way medicine is supplied across the region. Choosing the generic version, where one exists, is usually the simplest way to keep costs down without changing the treatment itself. If you take something regularly, it can pay to compare the local price against ordering it once you know the active ingredient.

How do I find my medicine by active ingredient?

Read the active ingredient on the box, not the brand. Every medicine has one international name for its active ingredient and any number of brand names on top. The brand you relied on at home may not be sold in Thailand, yet the same active ingredient almost certainly is, under a local name.

A common pain reliever such as paracetamol is sold under several names here, and an antibiotic such as amoxicillin in the same way. Once you know the active ingredient and the strength, matching the local product is straightforward. Our active ingredient pages group the brands that share a molecule, so you can recognise your medicine wherever you are, and you can also browse by category or by condition.

How do I ask for medicine if I don’t speak Thai?

Carry the active ingredient and strength written down. The chemical name is usually the same in any language and is what pharmacy staff will recognise. A photo of your old box, showing the ingredient and the dose, does the same job and removes the guesswork.

A translation app helps for anything more involved, and it is worth saving the names of your regular medicines in your phone before you arrive. If a conversation gets complicated, or the medicine is one you take for an ongoing condition, that is a sign to use a clinic or hospital with English-speaking staff rather than work it out at the counter.

Can I bring prescription medicine into Thailand?

Usually yes, for personal use, but keep the medicine in its original packaging and carry a prescription or doctor’s letter. Controlled medicines have stricter limits and may need advance permission from the Thai FDA. Always check your exact medicine before you travel.

The Thai Food and Drug Administration, part of the Ministry of Public Health, advises keeping medicines in their original packaging and carrying a copy of your prescription or a letter from your doctor. Keeping everything labelled and clearly yours, in your hand luggage, is the simplest way to avoid questions on arrival.

Some medicines need more care. The Thai FDA’s guidance on bringing health products into Thailand sets a personal-use allowance of about 30 days for medicines that contain certain controlled substances, carried with a doctor’s letter. For a larger amount, up to around three months, you apply to the FDA for a permit in advance, and the guidance is to do this roughly two weeks before you travel. Medicines classed as narcotics need separate permission, and cannabis and some other products are restricted.

These rules change, and the exact lists and limits are set by the Thai authorities, not by any general guide. Before you fly with anything you are unsure about, check the current Thai FDA guidance on psychotropic substances for your specific medicine, or ask them directly. It is far easier to sort a permit at home than to explain a problem at the airport.

Regulatory note: Thai FDA personal-import guidance for this article was last checked on 5 July 2026. Rules can change, especially for controlled, narcotic and psychotropic medicines. Always verify the exact medicine against current Thai FDA guidance before you travel.

What if my medicine is hard to find, or I run out?

First confirm the active ingredient, strength, dosage form and legal status in Thailand. For ongoing treatment, a local doctor, clinic or hospital pharmacy is often the safest route. Some people also use a licensed online pharmacy for non-urgent refills, in which case the supplier should clearly show who dispenses the medicine, where the pharmacy is licensed, whether a prescription is required, and how restricted medicines are handled.

For a medicine you take every day, the priority is never running out. Arrive with enough to settle in, learn the local active-ingredient name early, and line up a steady source before the first box runs low. A gap in a blood-pressure, thyroid or diabetes medicine is worth real effort to avoid, so plan a few weeks ahead rather than days. If you are on a long-term visa, our guide to chronic medicines and the Thai retirement visa goes into keeping a steady supply.

ZoneMD option: ZoneMD lets you search by active ingredient and compare the available brand and generic options, with dispensing and delivery handled by licensed pharmacy partners. Our how ordering works page walks through each step, from finding a medicine to receiving the parcel.

How do I check that medicine is genuine?

Check the pack and the seller. A genuine pack arrives sealed and undamaged, with the active ingredient, strength, maker, batch number and expiry all clearly printed and matching across the box and the blister. Loose tablets in an unmarked bag, smudged printing, or a missing batch and expiry are reasons to pause and ask.

The source matters as much as the pack. A reputable, licensed seller that shows you the maker and honest information is safer than one hiding behind big promises, and a price that looks too good to be true is a warning rather than a bargain. Our guide to buying generic medicines in Asia covers genuine-pack checks in more detail, and the World Health Organization publishes plain advice on substandard and falsified medicines.

How should I store medicine in Thailand’s heat and humidity?

Keep medicines cool, dry and out of direct sun, and leave tablets in their original blister until you take them. Heat and humidity break the active ingredient down faster, so a tablet that would keep to its printed expiry in a cool country can lose strength sooner here.

The worst storage spots are often the ones people pick by habit, the bathroom cabinet and the kitchen shelf, where steam and heat gather. A bedroom drawer or a cupboard in an air-conditioned room beats a sunny windowsill or a hot car. A few medicines need a fridge, which the pack will tell you. If a tablet looks discoloured, soft or crumbling, do not take it, and buy sensible quantities rather than stockpiling through a long, humid season.

Do and don’t

Do:

  • Ask for the active ingredient and strength, not just a brand name.
  • Keep the box and leaflet, and check the batch number and expiry.
  • Carry a prescription or doctor’s letter for regular and controlled medicines.
  • Use a clinic or hospital pharmacy for ongoing conditions and anything that needs assessment.
  • Check current Thai FDA rules before travelling with any controlled medicine, and arrange a permit in advance if one is needed.
  • Bring enough of any regular medicine to cover settling in, plus a margin.

Don’t:

  • Rely only on a foreign brand name the local pharmacy may not stock.
  • Buy loose tablets in unlabelled bags, or packs with smudged printing or no batch and expiry.
  • Store medicines in the bathroom, the kitchen or a hot car.
  • Travel with narcotic or psychotropic medicines without checking the rules first.
  • Self-prescribe antibiotics or controlled medicines to save a clinic visit.
  • Leave refills until the last few tablets.

Frequently asked questions

Do I need a prescription to buy medicine in Thailand? It depends on the medicine. Many everyday medicines are sold over the counter at retail pharmacies, but some require a prescription and controlled medicines are restricted. For anything you take for an ongoing condition, a clinic or hospital assessment is the safer route.

Can I use a prescription from my home country in Thailand? A foreign prescription is useful documentation and helps a pharmacist or doctor understand what you take, but it does not automatically entitle you to dispense a medicine here. For a controlled medicine, expect a local assessment. Carry the prescription or a doctor’s letter, especially when bringing your own supply in.

Can I bring sleeping, anxiety, ADHD or strong pain medicines into Thailand? These often contain controlled or psychotropic substances, so treat them as check-first. Keep them in original packaging with a doctor’s letter, observe the roughly 30-day personal-use limit, and apply to the Thai FDA in advance for a larger supply or a narcotic medicine. Verify your exact medicine before you travel.

Are generic medicines in Thailand safe? A generic has the same active ingredient as the original brand and is the everyday way medicine is supplied across the region. Buy from a licensed pharmacy, check the pack is sealed with a clear batch number and expiry, and ask the pharmacist if you are unsure which local product matches your medicine.

Where to go next

The simplest way to stay supplied in Thailand is to think in active ingredients, not brands. Learn the name of what you take, check it against whatever you are offered, and you can match the same medicine at any pharmacy in the country or have it delivered. Browse by active ingredient, by category or by condition, and see how ordering and delivery work when you are ready.

Travelling elsewhere in the region? We have matching guides for Singapore, Malaysia, Hong Kong, the Philippines and Bali.

This guide is general information, not medical or legal advice, and import rules can change. For anything that depends on your own medicine or your own situation, check the current Thai FDA guidance or ask a qualified healthcare professional.