MalaysiaTravelling with ADHD medication: rules, permits and documents

Connecting through Malaysia

Under the Dangerous Drugs Act 1952, 'in transit' covers goods brought into Malaysia whether or not they are landed or transhipped, so a passenger staying airside is covered. For dexamfetamine and mixed amphetamine salts, section 21 would require an export authorisation from the exporting country for drugs in transit, but section 25 disapplies all of that Part of the Act (including section 21) for a reasonable quantity for your own use on a foreign prescription, held by any person arriving in Malaysia, provided you declare it as soon as possible on arrival. How a passenger staying airside makes that declaration is untested. For methylphenidate, regulation 9 of the Poisons (Psychotropic Substances) Regulations 1989 on its face requires an export authorisation from the exporting country on import or in transit, and the personal-luggage exemption (regulation 4(2)(a)) covers only regulation 4(1), not regulation 9. Lisdexamfetamine (a Poisons Act psychotropic not on the regulation 9 list) and the non-stimulants are not reached by these transit rules.

If you clear immigration: No official source found carving out a transit exemption. If you clear Malaysian immigration for a connection or overnight stay (e.g. via KLIA), the ordinary entry rules described in Malaysia's own MOH/INCB guidance apply in full: all three ADHD stimulant classes are permitted for personal use up to a 30-day supply under the Dangerous Drugs Act 1952 s.25 self-declared traveller exemption, provided you carry a valid prescription and doctor's letter and declare at Customs if asked. No advance permit is needed for entry, so a landside transit passenger's practical requirements should be the same as any other arriving traveller.

Staying airside, never clearing immigration:

no official guidance found, so assume the full entry rules apply. A passenger on the ground at a Malaysian airport is 'in transit' under the Dangerous Drugs Act. Dexamfetamine and mixed amphetamine salts fall under the section 25 traveller exemption if declared as soon as possible on arrival, but how to declare while staying airside is untested. Methylphenidate on its face needs an export authorisation from the exporting country (regulation 9), with no personal-luggage exemption from that rule. Lisdexamfetamine and the non-stimulants are not reached by these transit rules.

Clearing immigration for a layover:

the full entry rules apply. No permit exists for personal supplies. Clearing immigration means the entry rules: at most one month's supply, declare dangerous-drug medication (dexamfetamine, mixed amphetamine salts) at the border on arrival, and carry the prescription or doctor's letter in English or translated.

Changing airports:

the full entry rules apply. Changing airports (KLIA to Subang) forces a full clearance, so the entry rules apply. No separate transfer rule is published.

Overnight layover, leaving the airport:

the full entry rules apply. Leaving the airport means clearing immigration and customs. The one-month personal-use exemptions carry no minimum-stay condition.

Checked bag travelling without you:

no official guidance found, so assume the full entry rules apply. Not addressed by any source. The personal-use exemptions are written around a person arriving with the medicine in their possession, so a bag moving without its passenger falls back on the consignment rules, which require licences and accompanying export authorisations.