How the PT 33 Prescription Process Works in Thailand
If you're considering medical cannabis in Thailand, the process starts and ends with one document: the PT 33 prescription form. Since Thailand moved to a medical-only cannabis framework, every legal purchase of cannabis flower or extract requires a valid PT 33 issued by an authorized practitioner. Here's what that actually looks like in practice.
Who can issue a PT 33 prescription?
Under current Ministry of Public Health rules, only these practitioner types may prescribe medical cannabis:
- Medical doctors
- Thai traditional medicine doctors
- Applied Thai traditional medicine doctors
- Folk healers (registered practitioners)
- Chinese medicine practitioners
- Pharmacists
- Dentists
At HOLYWEED, consultations are handled by our on-site medical doctor and Thai traditional medicine practitioner.
What happens during a consultation?
Your practitioner will review your medical history, current medications, and the symptoms or condition you're hoping to address. This isn't a formality — it's a genuine clinical assessment, and not every patient will be a suitable candidate for cannabis therapy.
What does the prescription cover?
If your practitioner determines cannabis is appropriate, they will issue a PT 33 specifying:
- The strain or product type
- Dosage guidance
- Duration of use — up to a maximum of 30 days
Each PT 33 is valid for a single fill and cannot be refilled. If you need more after your supply runs out, you'll need a follow-up visit and a new prescription.
Filling your prescription
Prescriptions are filled in person at a licensed dispensary — we cannot fill or ship a prescription without you or your authorized representative present. Clinics are required to keep prescription records on file for at least one year, so bring valid ID to your appointment.
A few things that are no longer allowed
It's worth being clear about what's changed. Under current regulation:
- Cannabis cannot be sold to walk-in customers without a prescription
- Online sales and delivery of cannabis flower are not permitted
- Recreational sale and advertising of cannabis products are prohibited
- Public consumption remains illegal, regardless of prescription status
These rules exist to keep the medical framework intact, and clinics that don't follow them risk losing their license.