Is 4-HO-MET legal in Malaysia?

Legal status

4-HO-MET is named nowhere in the First Schedule to the Dangerous Drugs Act 1952 and nowhere in the Poisons Act 1952. Psilocin is named in Part III, and 4-HO-MET differs from it at one N-substituent, which makes it an analogue rather than an isomer, ester, ether or salt. Those four are the only generic extensions Part III carries and the Act has no analogue clause. So on the text 4-HO-MET is not a dangerous drug and section 39B does not reach it. That is a statement about the schedule as amended to 25 November 2025.

Consequences if caught

Capital and life exposure. There is none on the text, and the reason is that 4-HO-MET is in neither list. Section 39B, the only capital provision in Malaysian drug law, bites on «a dangerous drug», which section 2 defines as «any drug or substance which is for the time being comprised in the First Schedule» to the Dangerous Drugs Act 1952. This substance is not in that Schedule, so there is no section 39B exposure, no section 37(da) presumption weight and no section 39A enhanced penalty. It is not in the Third Schedule to the Poisons Act 1952 either, so the section 30 psychotropic offence does not reach it. Do not read that as permission. The Dangerous Drugs Act carries no analogue clause at all, measured across the whole Act, so a substance is in or out on the naming; but section 45A provides that where the Minister «considers it expedient to add a substance to, or remove a substance from, or vary the First Schedule, he may by order make the requisite modifications», and he has used it twice since the consolidated text, by P.U. (A) 97 gazetted 2 April 2024 and P.U. (A) 416 gazetted 25 November 2025. An order takes effect on gazetting and there is no notice period. Customs may also treat an unlisted substance as a prohibited import under a separate order that was not read for this cell.

If prescribed or medical

Neither drug statute reaches 4-HO-MET, so neither supplies a prescription route for it and neither requires one. Psilocin is named in Part III as «Psilocine, Psilotsin, 3-(2-dimethylaminoethyl)-4-hydroxyindole», and 4-HO-MET differs from it at one nitrogen substituent. That makes it an analogue rather than an isomer, ester, ether or salt, and only those four relationships are carried forward by Part III. What this cell does not state is whether it is a registered product, an unregistered product or a prohibited import under the medicines and customs instruments, because none of those instruments was read for it.

Documentation

No documentation requirement arises under either drug statute, because neither reaches 4-HO-MET. There is no entry for a document to answer to. «Psilocine, Psilotsin, 3-(2-dimethylaminoethyl)-4-hydroxyindole» is the nearest, and a single nitrogen substituent separates them. That is not the same as saying it may be brought in freely. Product registration with the National Pharmaceutical Regulatory Agency and the customs prohibited imports orders are separate regimes, neither was read for this cell, and nothing is stated here about either. Carry any prescription and the original packaging as a matter of course, and expect the question at the border to be settled by those other regimes rather than by the Dangerous Drugs Act 1952 or the Poisons Act 1952.

Drug laws and enforcement change and vary within a country. This is not legal advice. Always confirm with Malaysia’s embassy or official drug authority before traveling; penalties can be severe, including imprisonment.