Do I have to declare controlled/prescription medicine at Thailand customs?

Only above the allowance. Up to 30 sets there is nothing to declare; beyond it you take the goods through the red channel and pay the duty.

What happens if I do not declare controlled/prescription medicine in Thailand?

If you declare the excess yourself, a flat-rate charge is applied to the excess. An administrative fine is imposed. If the goods are found without being declared, an administrative fine is imposed.

Can I post or ship controlled/prescription medicine to Thailand instead of carrying it?

Not under this allowance. It covers goods a traveller carries; a parcel is an import and is assessed under the postal rules instead.

Can I take controlled/prescription medicine out of Thailand?

Thailand publishes no separate rule for taking controlled/prescription medicine out; the destination's rules are what will apply.

Does the Thailand limit for controlled/prescription medicine apply per person or per family?

Per person. Each traveller carries their own allowance and it cannot be pooled with anyone else's.

Where does this rule come from?

The Customs Department (Thailand) states it in Passenger belongings related to health products into the Kingdom of Thailand — Thai FDA. CarryRules last confirmed that sentence at the source on 2026-09-19.

How does Thailand compare with other countries on controlled/prescription medicine?

Of the 20 countries covered here, 1 prohibit controlled/prescription medicine, 18 limit it and 1 let it through. Thailand is among the ones that set a limit.

How much Controlled/prescription medicine can I bring into Thailand?

Restricted

You can bring Controlled/prescription medicine into Thailand only within the stated limits.

Cabin baggage —

Checked baggage —

Declaration Above allowance

Limit 30 set

What you need to know

30 set
Channels: Carried with the traveler

Important

This allowance applies per person, not per family or group.

Official sources

Last verified 2026-09-19

Passenger belongings related to health products into the Kingdom of Thailand — Thai FDA Food and Drug Administration, Ministry of Public Health (Thailand)

Questions about Controlled/prescription medicine in Thailand

How many controlled/prescription medicine can I bring into Thailand?: Thailand allows 30 sets per traveller. Above that the goods are treated as an import and duty becomes payable. The allowance is per traveller and cannot be pooled between people.
Do I have to declare controlled/prescription medicine at Thailand customs?: Only above the allowance. Up to 30 sets there is nothing to declare; beyond it you take the goods through the red channel and pay the duty.
What happens if I do not declare controlled/prescription medicine in Thailand?: If you declare the excess yourself, a flat-rate charge is applied to the excess. An administrative fine is imposed. If the goods are found without being declared, an administrative fine is imposed.
Can I post or ship controlled/prescription medicine to Thailand instead of carrying it?: Not under this allowance. It covers goods a traveller carries; a parcel is an import and is assessed under the postal rules instead.
Can I take controlled/prescription medicine out of Thailand?: Thailand publishes no separate rule for taking controlled/prescription medicine out; the destination's rules are what will apply.
Does the Thailand limit for controlled/prescription medicine apply per person or per family?: Per person. Each traveller carries their own allowance and it cannot be pooled with anyone else's.
Where does this rule come from?: The Customs Department (Thailand) states it in Passenger belongings related to health products into the Kingdom of Thailand — Thai FDA. CarryRules last confirmed that sentence at the source on 2026-09-19.
How does Thailand compare with other countries on controlled/prescription medicine?: Of the 20 countries covered here, 1 prohibit controlled/prescription medicine, 18 limit it and 1 let it through. Thailand is among the ones that set a limit.

Related items

Accompanied cash Accompanying goods, non-commercial (flat-rate band) Agricultural/forestry/fishery/livestock products (general sub-cap) Alcohol and alcoholic beverages above 22% vol (or undenatured ethyl alcohol 80% vol and over)

Related countries

Australia Canada China France

Other items in this group

Controlled substances for personal medical use (schedules II-V) Dietary supplements and sports nutrition External-use medicine (personal use) Medicine containing stimulant raw materials Medicines containing narcotic or psychotropic substances Narcotic and psychotropic medicines