Is THC-P legal in Taiwan?

Legal status

Not controlled as a narcotic under Taiwan's Narcotics Hazard Prevention Act (毒品危害防制條例): absent by name from all four narcotics schedules and from the controlled drugs grades and items list. Tetrahydrocannabiphorol is not named anywhere in either list. The question is whether 附表二第155項「四氫大麻酚（Tetrahydrocannabinols、THCs）【包括其異構物及立體化學變體】」 reaches it, and this cell cannot settle that. The model: the four grades and their anchor substances are in the Act itself, article 2(2) reading 「毒品依其成癮性、濫用性及對社會危害性，分為四級，其品項如下」, and the full item lists are the Act's own four schedules, 附表一 to 附表四. The power to change them is delegated. Article 2(3) reads 「前項毒品之分級及品項，由法務部會同衛生福利部組成審議委員會，每三個月定期檢討，審議委員會並得將具有成癮性、濫用性、對社會危害性之虞之麻醉藥品與其製品、影響精神物質與其製品及與該等藥品、物質或製品具有類似化學結構之物質進行審議，並經審議通過後，報由行政院公告調整、增減之，並送請立法院查照」, a review committee of the justice and health ministries reviewing every three months, adjustment by Executive Yuan announcement, reported to the Legislative Yuan. The Act was last amended 4 May 2022. The list was last amended by the Executive Yuan announcement of 25 June 2026, in force 27 June 2026, which moved etomidate and eight related compounds from Category 2 up to Category 1.

Consequences if caught

No article of the Narcotics Hazard Prevention Act applies, because articles 4 to 11 operate only on substances graded in the Act's four schedules and this substance is in none of them. The argument each way is worth setting out because the answer decides between no offence at all and article 4(2) at life or ten years upward. Against coverage: THC-P is a seven carbon side chain homologue, not an isomer or a stereochemical variant, and the schedule itself names homologues separately, 四氫大麻丙酚（THCV）at 附表三第353項, 四氫大麻己酚（Parahexyl）at 附表二第125項 and 六氫大麻己酚（HHCH）at 附表二第224項, each of which would be redundant if the plural heading swept homologues in. For coverage: the entry is written in the plural, Tetrahydrocannabinols and THCs, which a court could read as a class rather than as delta 9 and its isomers. Capital and life exposure. Neither reaches this substance, and not because the penalty is low but because no narcotics offence applies to it at all, at any quantity. Articles 4 to 11 of the Narcotics Hazard Prevention Act operate only on substances graded in the Act's four schedules, and the death and life penalties live in article 4(1) for Category 1, article 6(1) for forced administration of a Category 1 narcotic, article 4(2) for life on Category 2, and article 15(1) for a public official committing an article 4(2) or article 6(1) offence. None of those can be engaged by a substance with no schedule entry. The one qualification is article 9(3), 「犯前五條之罪而混合二種以上之毒品者，適用其中最高級別毒品之法定刑，並加重其刑至二分之一」: if this substance is held mixed with substances that are graded, the charge is built on those, takes the highest grade among them and adds up to one half, and this substance is swept into that charge rather than giving rise to one of its own.

If prescribed or medical

No licensed medicine and no prescribing route in Taiwan. No cannabinoid medicine of any kind holds a domestic marketing licence.

Documentation

A traveller cannot resolve this at a border. The prudent reading is that a THC-P product is likely to be treated as a Category 2 narcotic, and the honest statement is that the text does not settle it.

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