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GOODS ACROSS BORDERS

ITEM RULE · TRAVELING

ALLOWED

Melatonin 🇹🇭 Thailand

VERIFIED · 2026-07-25LOW CONFIDENCE

Available OTC in Thai pharmacies

ANSWER

Can I bring Melatonin into Thailand?

ALLOWEDVERIFIED · 2026-07-25LOW CONFIDENCE

Available OTC in Thai pharmacies

QUANTITY / LIMITS

Personal use

DECLARATION

Within personal allowance — no separate declaration needed

SOURCE

customs.go.th
Verify against the official customs authority before acting on this answer.Report a correction

Full details

Melatonin is available over-the-counter in Thai pharmacies. No import restrictions for personal quantities. Widely used and affordable in Thailand. Travelers should verify current regulations with the destination customs authority before departure. Rules change frequently and enforcement practices vary by port of entry and officer discretion. In the reverse direction (taking melatonin out of Thailand): allowed — Melatonin supplements may be exported from Thailand freely as a dietary supplement.

Leaving Thailand with melatonin

ALLOWEDMelatonin supplements may be exported from Thailand freely as a dietary supplement.

Melatonin is an over-the-counter dietary supplement in Thailand and other jurisdictions (US, Canada, most of Asia) — freely exportable. Note that melatonin is a prescription-only medicine in some destinations (UK, EU generally, Australia, Japan), meaning arrival-side import may face restrictions even though departure is unrestricted. Personal-use quantities do not attract customs attention on departure.

PRACTICAL ADVICE

Personal-quantity melatonin (OTC supplement) clears as routine in destinations where it is OTC. In prescription-only markets (e.g. UK, France, Germany), declare with prescription if asked.

OFFICIAL SOURCES · VERIFIED 2026-07-25

RULE DETAILS

QUANTITY LIMITS

Personal use

LEGAL REFERENCE

Thai FDA regulations

CUSTOMS AUTHORITY

Thai Customs Department

AIR TRAVEL IS SEPARATE

This page covers destination customs rules in Thailand. Whether you can carry melatonin through security, in carry-on, or in checked baggage depends on airline and screening rules — see air travel rules.

Related rules

Melatonin rules in other countries

RULES5,339COUNTRIES85ITEMS111CARRIERS28GUIDES46UNIQUE SOURCES645LATEST VERIFICATION2026-07-26MethodologyChangelog