Can I take prescribed medical cannabis from the UK to Thailand?

Quick answer.

UK → Thailand checklist.

1. Check the exact active ingredients and product form with Thai FDA. Do not submit only the brand name or the words “medical cannabis”.
2. Use the Thai FDA traveller portal. The Narcotics Control Division provides a drug checker and permit application service for controlled medicines.
3. If Thai FDA classifies the medicine as a permitted Schedule II or III narcotic, obtain the traveller permit. Current Thai FDA guidance allows up to 90 days of prescribed use in those permitted narcotic schedules, but requires a permit requested at least 15 days before travel.
4. Do not rely on the narcotic permit route for a prohibited product. Thai FDA separately states that herbal products containing cannabis or hemp must not be imported.
5. Carry prescription evidence and original packaging. Keep the dispensing label readable and make sure the patient details match your passport.
6. Check transit countries separately. Thai approval does not authorise possession during a connection elsewhere.

Why does the product form matter so much?

Thailand’s traveller rules are category-specific. Thai FDA guidance permits certain Schedule II and III narcotic medicines for personal treatment under a permit, permits some psychotropic medicines under different quantity and documentation rules, and prohibits some other categories entirely. Separately, its passenger-belongings guidance says not to import herbal products containing cannabis or hemp.

That means a rule applying to one controlled medicine cannot safely be copied across to cannabis flower, an oil, a capsule or another preparation without confirming how Thai FDA classifies that exact product.

Is there a 90-day medical-cannabis allowance?

No blanket 90-day cannabis allowance should be inferred. Thai FDA’s 90-day rule applies to permitted medicines containing Schedule II or III narcotic drugs when the required permit is issued. It does not override a separate prohibition that may apply because of the product’s legal category or formulation.

Before relying on the 90-day controlled-medicine route, use the Thai FDA checker or obtain written confirmation from the Narcotics Control Division that your exact medicine falls within that route.

Can I use my UK prescription to buy cannabis in Thailand?

No automatic local access follows from a UK prescription. Current GOV.UK Thailand guidance says cannabis use is restricted to medical purposes and that possession or use requires a Thai-issued medical prescription, limited to a 30-day supply.

Your UK treatment summary may help a Thai clinician understand your existing treatment, but the decision to prescribe and the products lawfully available are governed by Thai law and clinical practice.

What if I need more medicine while in Thailand?

Plan around the Thai medical route rather than expecting a UK repeat to be dispensed locally. If treatment is needed, consult an appropriately authorised Thai medical provider and take your treatment summary, prescription history and product details with you.

Do not arrange for cannabis medicine to be posted or couriered to Thailand. Thai FDA guidance treats postal import separately and the traveller exception does not create a private-shipping route.

Can I take cannabis back out of Thailand?

Do not assume so. GOV.UK warns that it is illegal to take cannabis out of Thailand without the appropriate export permission. If you obtain a cannabis product in Thailand, check both Thai export law and UK import law before attempting to travel with it.

Before departure.

Recheck the Thai FDA traveller portal shortly before travel because the cannabis framework has changed repeatedly in recent years. Keep any permit or written classification decision with your prescription, clinician letter and original packaging, and verify every transit country independently.

Prepare your travel evidence →