Cannabis, THC and CBD in Taiwan: What US Visitors Face Under the Narcotics Hazard Prevention Act

A graduate student from Denver stops in Taipei for a week on the way home from a semester in Seoul. In her carry-on are a tin of CBD gummies bought legally in Colorado and a half-used vape cartridge she forgot about. At Taoyuan Airport the cartridge is tested and THC is found. She explains that both items are legal where she lives and are for her own use. By that evening she has been handed to the police, and the next day she is questioned by a prosecutor about transporting a Category 2 narcotic (a fictional example).

Taiwan's drug law is stricter than most Americans expect, and the structure of the offenses is different from US state law in one way that matters most: the act of bringing a substance across the border is a separate, much heavier offense than possessing it. This column walks through the statute so that the exposure is clear before anyone packs.

Cannabis is a Category 2 narcotic

Article 2 of the Narcotics Hazard Prevention Act sorts controlled substances into four categories by addictiveness, potential for abuse and social harm. Category 1 covers heroin, morphine, opium and cocaine. Category 2 covers opium poppy, coca, cannabis, amphetamine and similar substances. The schedule is reviewed every three months by a committee of the Ministry of Justice and the Ministry of Health and Welfare and adjusted by Executive Yuan announcement. The Act leaves medical and scientific use to a separate statute (Article 2, paragraph 4), so a US state's medical or recreational authorization does not change how it treats a traveler's cannabis, and Taipei Customs' English-language notice states plainly that marijuana remains a Category 2 narcotic in Taiwan and asks travelers not to import cannabis or related products.

Bringing it in is "transport," not "possession"

Article 4 is the provision that changes the picture for visitors. Manufacturing, transporting or selling a Category 2 narcotic is punishable by life imprisonment or a fixed term of at least ten years, with a possible fine of up to NT$15 million. Attempts are punishable. For Category 1 substances the maximum is death.

Article 17, paragraph 3 refers to a defendant who committed the transport offense for personal use, which shows that carrying even a small personal supply across the border can be charged as transport. The student in the example is therefore not necessarily looking at a possession charge with a two-year ceiling; she may be investigated for an offense with a ten-year floor. Mailing a package from the United States to a Taiwanese address, or asking a friend to carry something, falls under the same word, and because attempts are punishable, a parcel intercepted at customs still supports a charge.

The Act does contain mitigation. Article 17 reduces or waives the sentence of a defendant who discloses the source of the drug and thereby enables the arrest of other principals or accomplices, reduces the sentence of a defendant who confesses consistently during the investigation and at every trial stage, and, in its third paragraph, allows a court to reduce the sentence of a defendant who committed the transport offense for personal use where the circumstances are minor. That third paragraph is written for cases like the one above. It is a discretionary reduction below the statutory minimum, not a defense, and it is applied after a conviction for transport.

Possession, use and sharing

Where the border is not involved, the lighter provisions apply. Possession of a Category 2 narcotic carries up to two years' imprisonment, short-term detention or a fine of up to NT$200,000; possession of 20 grams or more of pure substance raises that to six months to five years with a fine of up to NT$700,000 (Article 11). Possessing equipment for producing or using Category 1 or 2 narcotics is a separate offense.

Use is punishable by up to three years (Article 10), but Taiwan routes first-time users toward treatment. Under Article 20, the prosecutor applies to the court for an order placing the defendant in an observation and detoxification facility for up to two months. If the facility reports no tendency toward continued use, the person is released and the case ends in a non-prosecution decision; if there is such a tendency, compulsory rehabilitation follows for six months to one year. Article 24 lets the prosecutor instead issue a conditional deferred prosecution requiring addiction treatment. A person released after this process who reoffends within three years is prosecuted in the ordinary way (Article 23). For a foreign visitor, the practical problem is that these procedures run for weeks or months while a visa-free stay runs out, so defense counsel's first job is often to agree a procedural path with the prosecutor quickly.

Sharing is its own crime. Transferring a Category 2 narcotic to another person carries six months to five years and a fine of up to NT$700,000 (Article 8); possessing with intent to sell carries at least five years and a fine of up to NT$5 million (Article 5). Passing a vape to a friend at a bar is a transfer.

One contrast with the United States is worth stating. Taiwan does have an administrative-fine track, but only for Category 3 and 4 substances: possession or use without justification brings a fine of NT$10,000 to NT$50,000 and four to eight hours of mandatory drug-harm education (Article 11-1). Cannabis is Category 2. There is no ticket-and-fine outcome for it.

CBD: the 10 ppm line and the prohibited-drug rules

Americans carry CBD products as casually as vitamins, and Taiwan's treatment of them has two layers.

The first is the THC content. Taichung Customs' published guidance states that CBD (大麻二酚) is regulated in Taiwan as an ordinary pharmaceutical because it has pharmacological activity without addictive properties, and that a product whose THC content exceeds 10 ppm is treated as a Category 2 narcotic under the Act's schedule. A CBD gummy or oil with THC above that line is a Category 2 narcotic for the purposes of Articles 4 and 11, regardless of the label.

The second layer applies even when THC is under the limit. Because CBD is a pharmaceutical in Taiwan, a CBD product that has not been approved for sale there and is imported without permission is a "prohibited drug" under Article 22 of the Pharmaceutical Affairs Act, which defines the term to include drugs imported without approval. Article 82 punishes manufacturing or importing a prohibited drug with up to ten years' imprisonment and a fine of up to NT$100 million; Article 83 punishes knowingly selling, supplying, transporting or transferring one with up to seven years and a fine of up to NT$50 million. Article 22 exempts medicines that travelers carry for personal use within limits announced by the health authority, but the customs guidance describes a separate route for CBD: a case-by-case import application to the Food and Drug Administration supported by a physician's prescription. Nothing in that guidance treats a tin of gummies in a carry-on as personal-use medicine. Ordering CBD online from the United States for delivery to a Taiwanese address is an import under the same provisions.

Rights at the airport and after

If customs finds a suspicious item, the traveler is handed to the police and then to a prosecutor. Article 95 of the Code of Criminal Procedure requires that before questioning the suspect be told the suspected offense and all charges, that she may remain silent, that she may retain defense counsel (and request legal aid if eligible), and that she may ask for favorable evidence to be examined. Article 27 allows a suspect to retain counsel at any time, including during police questioning, and allows a spouse or close relative to retain counsel on her behalf. Because the transport offense carries a minimum of ten years, Article 31 requires the court to appoint a public defender or lawyer at trial if none has been retained. That guarantee applies at trial and at a detention hearing during the investigation (Article 31-1), but not automatically at the airport or in the first prosecutor's interview, and statements made there shape everything that follows. Ask for an interpreter, ask for a lawyer, and do not sign a Chinese-language record you cannot read.

Immigration consequences run in parallel. The Immigration Act, Article 18, allows the National Immigration Agency to deny entry to a foreign national carrying prohibited items or with a criminal record in Taiwan or abroad. Article 36 allows the agency to deport, or order to leave within ten days, a foreign national found after entry to fall within those grounds; where a criminal case is already before the courts, the agency notifies the judicial authorities ten days before removal, and a person in detention or under a travel restriction is not removed until the case allows. After a sentence is served, the record remains a ground to refuse future entry.

Before you fly

Do not bring it. That covers cannabis in any form, THC vape cartridges and edibles, and CBD oils, gummies, cosmetics and tinctures; for a prescribed cannabinoid medicine, check the Food and Drug Administration's case-by-case import route before travel. Travelers who need a controlled medication in Taiwan should check its status and carry the prescription and an English description, and should assume that anything containing cannabinoids will be examined as a narcotic or a prohibited drug rather than as medicine. Do not carry packages for others, and keep control of your own luggage.

If a family member or colleague is detained in Taiwan on a drug allegation, the first things to establish are what was seized and in what quantity, whether a laboratory result exists, which stage the case has reached (police, prosecutor or court), and what documents have already been signed. Hovering International Law Firm (昊鼎國際法律事務所) advises on retaining defense counsel, on procedural options with the prosecutor, and on the immigration consequences. Attorney Wei Tseng (曾雋崴) can be reached at wei@hoveringlaw.com.tw. Taipei office: 7F-2, No. 35, Sec. 1, Chengde Rd., Datong Dist., Taipei City 103, Taiwan.

Sources

Sources opened and checked on October 7, 2026 (Taiwan time). Chinese statutory text controls over any English rendering in this column.

• Ministry of Justice, Narcotics Hazard Prevention Act (毒品危害防制條例), amended May 4, 2022: Article 2, Article 4, Article 5, Article 8, Article 10, Article 11, Article 11-1, Article 17, Article 20, Article 23 and Article 24.
• Ministry of Justice, Pharmaceutical Affairs Act (藥事法), amended March 4, 2026: Article 22, Article 82 and Article 83.
• Ministry of Justice, Code of Criminal Procedure (刑事訴訟法): Article 27, Article 31, Article 31-1 and Article 95; Immigration Act (入出國及移民法): Article 18 and Article 36.
• Customs Administration, Ministry of Finance, Taichung Customs, notice on unauthorized purchase and import of CBD products, published May 17, 2023 (CBD regulated as a pharmaceutical; THC above 10 ppm treated as a Category 2 narcotic; FDA case-by-case import application).
• Customs Administration, Ministry of Finance, Taipei Customs, Taipei Customs urges the public not to import cannabis and its related products, published October 11, 2024.

General information, not individualized legal advice. Sources checked October 7, 2026 (Taiwan time).