Cannabis flower is now a controlled herb — legal only with a doctor's prescription (valid up to 30 days) from a licensed practitioner, bought through a properly supervised dispensary. Recreational use was re-criminalised on 25 June 2025 (up to one year in prison, ༙20,000 fine). THC extracts and oils over 0.2% stay Category-5 narcotics; CBD under 0.2% THC remains legal. Around 40% of Thailand’s dispensaries have closed since the rules tightened, and a full narcotics re-listing is being actively debated. Never carry cannabis across any border.
From the 2022 decriminalisation to the 2025 reversal
In June 2022 Thailand removed cannabis from its Category-5 narcotics schedule, becoming the first country in Asia to decriminalise the plant. The stated aim was medical use and an economic boost for farmers and tourism — but the surrounding law was left thin, and the visible result was a boom of thousands of dispensaries trading in a widely-tolerated grey area for the better part of three years.
That era ended on 25 June 2025, when Public Health Minister Somsak Thepsuthin introduced regulations explicitly re-criminalising recreational use and reclassifying cannabis flower as a controlled herb obtainable only with a doctor's prescription. Since then the direction has been steadily tighter, not looser — this page reflects the framework as it stands in mid-2026, and it is worth re-checking, because this remains one of the fastest-moving areas of Thai law.
The medical-only framework now in force
As of this update, legally obtaining cannabis in Thailand means working within a medical framework, not a retail one:
- A valid prescription (form PT 33) from a licensed Thai medical practitioner is required to buy cannabis flower, and the prescription is only valid for up to 30 days.
- Since January 2026, dispensaries have been required to have medical supervision and a certified practitioner on-site — a walk-in shop with no clinical oversight is not operating within the current rules.
- Online sales and vending-machine distribution are banned, along with sales near schools, temples and other sensitive locations.
Penalties for recreational or unauthorised use
Unlike the 2022–2025 grey-area period, the exposure today is explicit: recreational use without the required prescription is a criminal offence that can carry up to one year's imprisonment and a fine of up to 20,000 baht. Public smoking remains separately treated as a potential “public nuisance” under public-health law, use near schools and temples is off-limits, and sale to under-20s or to pregnant or breastfeeding women is prohibited. Private venues — hotels, condos, landlords — also set their own rules regardless of the national position, so check your lease before assuming anything is permitted where you live.
Oils, edibles & extracts: still Category 5 above 0.2% THC
This part of the law hasn't moved and predates the 2025 reversal:
- Extracts and oils over 0.2% THC by weight remain classed as Category 5 narcotics under Thailand's drug control law, entirely separate from the flower-level rules above.
- CBD products under 0.2% THC remain legal to buy without a prescription.
- Imported edibles, gummies and vapes carry real risk because their actual THC content is often unverifiable — if you can't confirm it, assume it's controlled.
See our bringing medication into Thailand guide for how controlled substances are handled at the border.
2026 so far: tighter rules, fewer shops
The tightening has continued into 2026. A Ministerial Regulation on the production, import, export, sale and possession of cannabis and hemp plant extracts was published in the Royal Gazette and took effect on 26 April 2026, and a second Ministerial Regulation (No. 2, B.E. 2569) tightening cannabis flower licensing rules followed on 30 April 2026. The market impact has been significant: of roughly 18,400 cannabis shops operating nationwide when the 2025 rules landed, an estimated 7,300 (about 40%) had closed by February 2026 after failing to renew their licences under the stricter medical-supervision requirements, leaving roughly 11,100 still operating under the new framework.
Driving: treat it like alcohol
Driving or riding under the influence of cannabis is illegal and penalised like other impaired driving — and the safety stakes are real, because Thailand’s roads are among the most dangerous in the world. Insurers can also deny claims where impairment is a factor. The rule is the same one you’d apply to alcohol: if you’ve used cannabis, whether prescribed or not, don’t drive. Our driving in Thailand guide covers the wider picture.
The hard line: never carry it across a border
Even a legally-prescribed purchase from a licensed Thai dispensary gives you zero protection at an airport or another country’s border. Taking it out of Thailand is illegal export, and importing it into your destination — especially some neighbouring countries — can carry among the harshest penalties in the world. Even on domestic flights, airports and airlines may restrict it.
Whatever the rules are inside Thailand at any given moment, the moment you approach a border the legal world changes completely. What’s bought in Thailand stays in Thailand — no exceptions, no “but it was prescribed.”
Mistakes to avoid
- assume the loose, decriminalised-feeling 2022–2024 era still applies — recreational use was re-criminalised in June 2025
- buy from a shop with no doctor or prescription requirement — that shop is very likely operating outside the current rules
- treat a high-THC oil, vape or edible like a legally-dispensed flower — extracts over 0.2% THC stay Category 5 narcotics
- drive or ride after using, prescribed or not
- ever carry cannabis to an airport, onto a flight or across a border
- rely on anything written before mid-2025 — this remains the fastest-changing area of Thai law affecting foreigners
Frequently asked
Settle in with the full picture
The best moves to Thailand are the well-informed ones. Browse residences and areas, and lean on guides that tell it straight.
General information only — not legal, medical or travel advice. Thailand’s cannabis laws, prescription requirements, THC limits and penalties have changed significantly since 2022 and continue to change; a full narcotics re-listing remains under active discussion as of this update. Confirm the current rules with the Thai Ministry of Public Health, the Thai FDA (อย.), Thai Customs and your nearest Thai embassy or consulate before acting, and never carry cannabis across any international border. BAANLYY never takes paid placement.
Sources & References
Primary and official sources are cited above. Government rules, fees and procedures in Thailand change over time and vary by office; always confirm current requirements with the relevant authority before relying on them. BAANLYY never takes paid placement in editorial content.
