If you have bought cannabis in Thailand recently, you have probably heard the term PT33, and if you have not, you will the moment you walk into a licensed shop. The PT33 consultation is the quick, legal step that now sits between you and any cannabis flower purchase in the country. It sounds official, and it is, but in practice it takes a few minutes. Here is exactly what a PT33 is, why it exists, and how the process works at How High in Koh Samui.
What Is a PT33?
PT33 (in Thai, ปท.33) is the official medical cannabis certificate issued by a licensed practitioner. Since June 2025, when the Thai government reclassified cannabis flower as a controlled herb under the 2025 controlled-herb rules, every legal purchase of flower or high-THC product has to be authorized by this form. In plain terms, it is the paperwork that makes your purchase legitimate. It is issued in store by a qualified practitioner after a short consultation about what you are looking for and why, and you keep it with you while you have product on you.
Why the Consultation Exists
The PT33 step is not there to make life difficult. It is the mechanism that keeps Thailand’s cannabis market on the right side of the new rules, and it protects you as much as the shop. A proper consultation means someone qualified has checked that what you are buying suits you, that the dosage makes sense, and that the sale is fully documented. That is the difference between a regulated dispensary and an unlicensed seller who can offer you none of that cover.
The How High Process, Step by Step
The whole thing is simpler than it sounds. First, walk into either of our two shops, no appointment needed. Second, have a short consultation with our certified practitioner, who will ask about your experience and what you are after. Third, receive your PT33 certificate, which authorizes your purchase. Fourth, choose your product with a budtender and enjoy it responsibly in private. Most people are surprised by how quick and relaxed it is. The consultation itself is quick and low-cost (often free with a purchase, so just ask in store); the prescription is what actually unlocks a legal sale. It feels less like a doctor’s visit and more like a knowledgeable shop assistant making sure you leave with the right thing, legally.
What Your PT33 Lets You Buy
With your certificate sorted, the full menu opens up: imported Cali packs, solventless concentrates, and the local Thai weed shelf. Everything is labelled and lab-aware, so the consultation and the product line up: you get guidance, then you get exactly what was recommended.
When You Can Visit
How High has two locations on the island. The Chaweng shop is open around the clock, closing only from Tuesday night into Wednesday morning, while the Fisherman’s Village shop in Bophut runs from 9am to 1am daily. You can sort your PT33 at either one. If you would rather not travel, you can also message the team on WhatsApp to arrange delivery in Koh Samui.
A Quick Word on Buying Smart
The PT33 is one piece of buying cannabis the right way in Thailand. For the full picture, including how to spot a licensed shop and what to check before you pay, see our Thailand cannabis buying tips. And once you are sorted, our team at How High in Chaweng and Bophut will handle the certificate and the recommendations in one easy visit.
