How Pharmacies Work in Thailand, and What You Cannot Bring Into the Country

Two things about medication in Thailand surprise almost every family that moves here, and they pull in opposite directions.

The first is how much you can simply walk in and buy. The second is how strict the rules are about bringing your own supply into the country, which is the one that occasionally ruins somebody's arrival.

The green cross on every corner

Pharmacies here are everywhere, marked by a green cross, and they fall into two rough camps.

The chains, Boots and Watsons most visibly, sit in every mall and on most busy corners. Staff in central Bangkok generally speak English, the stock is predictable, the shops are air conditioned and open into the evening. You pay for all of that, but not much.

The independents are the small shops with a pharmacist behind a counter and stock to the ceiling. They are considerably cheaper, sometimes dramatically so for the same product, and the pharmacist is often more willing to actually advise you. English varies. For a family settling in, it is worth finding the good independent near your condo and also knowing where the nearest chain is for the evening you need something at 9pm.

Hospital pharmacies are the expensive option by a wide margin. If you have a hospital prescription and no urgency, it is usually worth taking it to a pharmacy instead, though controlled items will have to stay with the hospital.

What you can buy without a prescription

A great deal is available over the counter that you would need to see a doctor for at home. Painkillers, antihistamines, cold and flu remedies, stomach and rehydration treatments, skin preparations, and contraceptive pills are all straightforward to buy.

Prices are generally a fraction of Western equivalents, particularly for local generics, which are the same molecules made under Thai licence. If cost matters, ask the pharmacist for the Thai generic rather than the international brand and expect to pay considerably less.

For minor illness, the pharmacist is a genuinely useful first stop rather than a fallback. A Thai pharmacist will happily look at a rash, listen to a description of a child's symptoms, and either sell you something sensible or tell you to go to a hospital. Using them this way will save you a great many unnecessary hospital visits in your first year.

The antibiotics question

Antibiotics need their own paragraph, because the situation here is different from what most families are used to and it is easy to misread it as a convenience.

In practice, antibiotics are widely sold in Thai pharmacies without a prescription, and amoxicillin in particular is cheap and easy to obtain. That is the reality on the ground rather than a recommendation.

The reason to be careful is not legal risk to you, it is that self-prescribing antibiotics is how you end up treating a viral infection with a drug that cannot touch it, giving a child the wrong dose or the wrong duration, and contributing to a resistance problem that Thailand takes seriously. Most childhood fevers and coughs are viral and antibiotics do nothing for them. If you think your child needs an antibiotic, that judgement is worth a doctor rather than a counter conversation, and a consultation at a good local private hospital is not expensive.

Bringing your own medication in

Now the direction that catches people out. Thailand regulates what you may bring in far more tightly than it regulates what you may buy once here, and the limits are based on the category the drug falls into rather than on whether you have a prescription.

Broadly, ordinary prescription medication for personal use is limited to about a 30 day supply. Psychotropic substances are also capped at 30 days without a permit, and up to 90 days with a Thai FDA permit arranged in advance. Drugs classed as narcotics require a permit regardless of quantity.

Where a permit is needed, the Thai FDA runs an online application, and the guidance is to apply at least 15 days before travel. You will generally need a doctor's certificate giving the patient's details, the diagnosis, the medication by both generic and brand name, the dosage and quantity, and the prescriber's licence number, along with your passport and travel details. Carry the certificate printed and signed, because a prescription on a phone screen is not what customs is looking for.

Keep everything in its original labelled packaging. A month of loose tablets in a pill organiser with no box and no paperwork is the version of this that causes problems.

The ADHD medication problem

This deserves its own section because it affects a lot of international school families and the answer is genuinely surprising.

Methylphenidate, the active ingredient in Ritalin and Concerta, is a category 2 psychotropic substance in Thailand. It can be brought in for personal use in limited quantity, but only with a proper physician's certificate covering the patient, the diagnosis, the medication by both names, the dosage and the prescriber's licence number, printed and signed.

Amphetamine-based medications are a different matter entirely. Adderall, dextroamphetamine and lisdexamfetamine fall under Thailand's category 1 narcotics, and importing them for personal use is not permitted under any circumstances. The penalties attached to that category are severe and are not softened by having a prescription from home.

If your child is treated with an amphetamine-based medication, this is something to resolve deliberately with your prescribing doctor and a Thai paediatrician well before you move, not something to discover at the airport. The Thai FDA maintains an official checker for traveller medication permits, and your own embassy will usually confirm the current position. Rules in this area do change, so verify rather than relying on this article or on a forum thread.

When to skip the pharmacy

A pharmacy is the right first stop for minor, familiar things. It is the wrong stop for a few situations that are worth naming plainly.

Go to a hospital instead for a fever in an infant, a fever that has lasted more than a couple of days in an older child, breathing difficulty, dehydration, a child who is unusually drowsy or unresponsive, any significant injury, and anything you are simply worried about and cannot explain. Private paediatric consultations in Bangkok are affordable enough that waiting it out to save money is a false economy.

Our hospital directory lists which places have a paediatric service and which have a children's emergency department staffed by paediatricians rather than a general emergency department that also sees children. It is worth knowing the difference before the night you need it.

And keep a small home kit: paracetamol in a children's formulation, oral rehydration salts, a thermometer, antiseptic and plasters, and any regular medication with a comfortable buffer. Most of what a family needs at 11pm is not a pharmacy trip, it is a cupboard that was stocked in advance.