Circadin in Thailand
Melatonin · Hormone (sleep regulator) · Neurim
Used for: Insomnia in older adults and circadian sleep problems.
- Available in Thailand
- YesCircadin is registered in Thailand
- Active ingredient
- MelatoninHormone (sleep regulator)
- Prescription
- Depends on the productDifferent Thai products with this ingredient have different legal classes. See the table below.
- Controlled substance
- NoNot narcotic or psychotropic
- Bringing it in
- AllowedTraveller rules
Source: Thai FDA official records · Last checked
Is Circadin available in Thailand?
Yes. Circadin is registered with the Thai FDA. We found 2 active registrations (2 mg), held by บริษัท ดีเคเอสเอช (ประเทศไทย) จำกัด (Neurim). Registration means the product is licensed for sale in Thailand. It does not guarantee that a particular pharmacy has it in stock.
Thai FDA registered products: Circadin
2 active registrations on the Thai FDA medicine register. Select a registration number to open the official record.
Registrations
| Product | Form | Legal class | Registration no. |
|---|---|---|---|
| CIRCADIN 2 MG PROLONGED-RELEASE TABLETS- | sustained release tablet | Pharmacist | 1C 43/53 (N) |
| CIRCADIN 2 MG PROLONGED-RELEASE TABLETS- | sustained release tablet | Prescription | 1C 43/53 (NC) |
Do I need a prescription for Circadin in Thailand?
It depends on the product. Some Thai melatonin products are specially controlled drugs (prescription only) and others are dangerous drugs (pharmacist only, no prescription needed). Check the legal class of each product in the table below.
Can I bring Circadin into Thailand?
Allowed
Allowed for personal use: up to 30 days’ supply
- Bring no more than 30 days’ supply for your own use.
- Keep it in the original container.
- Carry your prescription or a doctor’s letter.
- Medicines cannot be posted or shipped to you in Thailand. The 30-day allowance applies to medicines you carry.
Legal basis: Drugs Act B.E. 2510 (1967), section 13(4). Thai FDA: FAQs on medicines (Drugs Act B.E. 2510, s.13(4))
Is melatonin a controlled substance in Thailand?
No. Melatonin is not on the Thai list of narcotic or psychotropic substances, where it appears in the “others” group. The ordinary medicine rules apply.
Other melatonin products in Thailand
These contain the same active ingredient as Circadin. They are not necessarily interchangeable: strength, form and approved uses can differ, so talk to your doctor before switching.
- Melodin1 registration
Sources
- Thai FDA medicine register (ระบบค้นหาข้อมูลผลิตภัณฑ์ยา), active-ingredient search for “Melatonin”, retrieved 30 September 2026
- Thai FDA Narcotics Control Division, Permit for Traveller: drug list, retrieved 30 September 2026
- Thai FDA: FAQs on medicines (Drugs Act B.E. 2510, s.13(4))
Registration numbers link to the Thai FDA’s public record for each product. Spotted something out of date? Report a correction.
General information only, not medical or legal advice. Rules change, so confirm with the Thai FDA or a pharmacist before you buy, take or travel with a medicine. Medical disclaimer