Reviewed by the ThaiCannaMed medical team. Last updated: July 2026.
Medical cannabis in Thailand is legal, but the rules are very different from those that followed decriminalisation in 2022. Since June 2025, Thailand has operated a medical-only framework: every purchase of cannabis flower requires a valid PT33 prescription issued by a licensed Thai medical practitioner.
This guide explains how Thailand moved from legalisation to decriminalisation and then to stricter medical regulation, what the current rules mean for patients, tourists and dispensaries, and how to obtain a PT33 through ThaiCannaMed.
The Legalisation Timeline: 2018–2026
Thailand’s cannabis framework has changed repeatedly, which is why older online advice can now be dangerously misleading.
2018: Thailand legalises medical cannabis
Thailand became the first country in Asia to legalise cannabis for medical use and research. It did not legalise a general recreational market.
2019–2020: The medical framework develops
The Ministry of Public Health built a system around licensed practitioners, approved preparations, research and hospital-based distribution.
2021: Access expands
Access widened, including a greater role for Thai traditional medicine practitioners.
June 2022: Cannabis is removed from the narcotics list
Cannabis was removed from Thailand’s narcotics list. Thousands of dispensaries opened almost overnight, and cannabis flower became widely available without consistent clinical oversight.
2023–2024: Pressure for tighter rules grows
Concerns grew around unlicensed shops, underage access and public smoking. Authorities tightened rules affecting dispensaries, advertising and public nuisance.
June 2025: Thailand returns to a medical-only model
The Ministry of Public Health revised the controlled-herb framework. Cannabis flower remained available for medical use, but every lawful retail purchase now required a PT33 prescription from an authorised Thai practitioner.
Dispensaries were required to verify prescriptions, retain records and sell within the amount and period authorised by the prescriber. The official prescription form and associated controls were published through the Royal Thai Government Gazette.
Late 2025: Enforcement exposes weak compliance
Only a minority of expiring dispensary licences successfully renewed, and more than 7,000 dispensaries closed as standards and enforcement tightened.
April 2026: Regulation expands beyond retail
Further regulation extended licensing requirements across cultivation, processing, export and research, reinforcing traceability throughout the supply chain.
June 2026: Inspections and fake-prescription enforcement intensify
Authorities carried out around 1,200 nationwide inspections and increased action against fraudulent PT33 forms. A prescription must represent a real clinical assessment, not paperwork created merely to complete a sale.
What the Current Cannabis Rules Mean for Patients
A valid PT33 is required for every purchase
A patient needs a PT33 prescription issued by a licensed Thai practitioner before buying cannabis flower. A prescription issued overseas does not replace the Thai PT33 requirement.
Approval is not automatic. The practitioner must assess the patient and may decline to prescribe cannabis when it is not clinically appropriate.
A PT33 is valid for 30 days
A PT33 normally covers a 30-day treatment period. The practitioner determines the appropriate amount from the patient’s circumstances, symptoms and treatment plan. There is no general “10 grams per day” allowance.
Patients who need to continue treatment require a renewal assessment and a new prescription after the existing PT33 expires.
Age and health restrictions apply
Patients must be at least 20 years old. Cannabis must not be sold to anyone who is pregnant or breastfeeding.
Conditions that may be considered include chronic pain, insomnia, migraine, loss of appetite and Parkinson’s disease. This is not automatic eligibility. The practitioner must consider the patient’s symptoms, medical history, medication and possible risks.
For broader patient information, visit the ThaiCannaMed Patients Hub.
What the Rules Mean for Dispensaries
A compliant dispensary must operate as part of a documented medical supply chain.
Dispensaries must:
sell cannabis flower only against a valid and verified PT33;
match each sale to the prescription’s authorised amount and treatment period;
retain the required transaction and prescription records for inspection;
complete the relevant reporting, including the PT28 reporting process;
source flower through compliant, traceable supply channels; and
follow the rules on age, pregnancy, breastfeeding, advertising and public nuisance.
Cannabis flower should come from GACP-certified sources under the applicable Department of Thai Traditional and Alternative Medicine requirements, with batch traceability from cultivation to retail.
On-site smoking without medical supervision is not permitted. Selling without a valid prescription can lead to licence suspension, fines and, for serious or repeated offences, criminal consequences.
Businesses looking for a compliant medical pathway can learn more about the ThaiCannaMed partner programme.
Public Use, Recreational Sales and Penalties
Thailand’s current system is built around medical use. Recreational retail sales outside that framework are not lawful simply because cannabis was decriminalised in 2022. Public smoking remains prohibited where it creates a public nuisance, while possession without a valid prescription creates legal risk. A fake or improperly issued PT33 offers no genuine protection.
What Tourists Need to Know
The same medical framework applies to visitors. A tourist can obtain a PT33 using a passport, but an overseas prescription or medical card is not a substitute. English-language and remote consultations are available. Once issued, the PT33 can be viewed digitally through the patient portal with its remaining amount and expiry information.
A Thai prescription does not make it legal to cross an international border with cannabis. Do not take it onto an international flight. Destination-country laws still apply, and some countries prosecute citizens for cannabis offences committed overseas.
How to Obtain a PT33 with ThaiCannaMed
ThaiCannaMed offers three practical routes to a medical consultation:
1. Online video consultation
Patients can complete a video consultation with a licensed practitioner. The initial consultation is THB 600 and renewals are THB 400, generally available daily from 10:00–02:00.
2. Wonderland Clinic in Bangkok
Patients can book an in-person appointment at Wonderland Clinic. A PT33 issued there is valid at any registered dispensary in Thailand, subject to its terms.
3. A participating Green Network dispensary
At participating locations, patients scan the in-store QR code, consult a licensed practitioner, receive a PT33 where medically appropriate and purchase without leaving the shop.
The ThaiCannaMed Green Network includes more than 20 participating dispensaries, with locations in Bangkok and Phuket. Examples include Cloud Nine Asoke, Wonderland, Kush House, Mary Jane Nana, Mary Jane and Juicy Buds Phuket. Participation and availability can change, so check the directory before visiting.
What Comes Next for Cannabis Law in Thailand?
Thailand still does not have the comprehensive Cannabis Act debated for years, so further amendments remain possible. The direction in 2026 is nevertheless clear: medical access, licensed practitioners, verified prescriptions, traceable products and documented sales. Patients should obtain a genuine assessment, keep a valid PT33 and buy only through a dispensary that checks it properly.
Frequently Asked Questions
Is medical cannabis still legal in Thailand in 2026?
Yes. Cannabis flower remains legal for medical use when the patient has a valid PT33 prescription from a licensed Thai practitioner. Unregulated recreational sales are not part of the lawful medical framework. For a broader explanation, read our guide to whether cannabis is legal in Thailand.
Which conditions qualify for medical cannabis in Thailand?
Conditions that may be assessed include chronic pain, insomnia, migraine, loss of appetite and Parkinson’s disease. Eligibility is decided individually by the licensed practitioner; having a named condition does not guarantee a prescription.
How long is a cannabis prescription valid in Thailand?
A PT33 is valid for 30 days. Continued treatment requires a renewal assessment. ThaiCannaMed renewals cost THB 400, while some participating Green Network dispensaries include the consultation within qualifying bundle arrangements or minimum-spend offers.
Stay Legal: Get Your PT33 Today
Complete a genuine medical consultation and receive a PT33 if the licensed practitioner decides cannabis is appropriate for you.