Is Opium legal in Thailand?

Legal status

Opium is a Category II narcotic in Thailand. The Thai FDA table updated 15 September 2025 prints the heading ยาเสพติดให้โทษประเภท 2, narcotics subject to penalty of category 2, and names opium beneath it. Opium is named as the raw material, and the table places it with the medical opiates rather than with heroin. Section 91 of the Narcotics Code B.E. 2564 is the Category II limb and section 146 carries its penalties, while the identity again comes from a Ministry of Public Health notification rather than from the Code. Category II is a different place in this scheme from Category I, and the difference is not cosmetic: it changes which penalty section applies and removes the limb that can reach life or death.

Consequences if caught

Capital exposure: none. Section 146 carries no death penalty and no life term at all, and that is the first thing to say about Opium. The ceiling it states is up to 10 years, rising to 1 to 15 years where the Category II conduct is commerce or public dissemination. Section 145 paragraph 3, the only limb this dossier records as reaching life or death, governs Category I narcotics and does not follow a Category II substance. No quantity threshold is written into the section 146 penalty limb either, so weight is not what moves a case between those two bands. Opium is named as the raw material and the table places it with the medical opiates rather than with heroin, so section 146 and not section 145 states the ceiling.

If prescribed or medical

Opium sits in narcotics Category II under the 15 September 2025 table, and the placement is the classification rather than a statement about who may lawfully hold it. Thailand's country level traveller rule for personal medication was not established by this reading. The sources opened were the Narcotics Code B.E. 2564, the Thai FDA narcotics table updated 15 September 2025 and the B.E. 2565 psychotropic naming notices in the Royal Gazette, and the dossier is explicit that its findings come from those naming instruments and not from a traveller permit label, so no import permit route, no personal supply quantity ceiling and no certificate requirement can be stated here for Opium. A prescription does not move the entry out of Category II, and the route that a prescription or a foreign dispensing record would have to satisfy at the Thai border is precisely what was not read. What is missing from this row is the permission, not the classification, and the gap is in what was read rather than a finding that no lawful route exists. The raw material and the compound derived from it part company in this table, and the raw material is on the lighter section.

Documentation

Carry no expectation that paperwork answers this row, because Opium is not something a traveller is dispensed: what was established is a Category II placement in the Thai FDA table updated 15 September 2025, which is a criminal classification and not a permit question, and no Thai exemption or allowance for it was established here. Check whether the finding relied on is the raw material line or a derived compound, because this table separates them. The reading was taken on 20 September 2026 from the consolidated narcotics table, at https://narcotic.fda.moph.go.th/media.php?id=808160206197497856&name=NARCO+list+(update+15.09.2025)+NEW.pdf. No express open reuse licence was located on the cited page, so only the wording needed for verification is reproduced, with attribution and a direct link. The names and categories are set by ministerial notification, and the publications do not certify that no later notification exists, so re-read before relying on this.

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