Legal vs Illegal: What Changed in Thai Cannabis After June 2025

What changed in Thai cannabis after June 2025 is simple to state and large in effect: the country moved from an open, decriminalized market to a medical-only one. Recreational sale and possession without a prescription became illegal, while medical access with a prescription remained legal. Almost everything confusing about the current situation comes from people not registering this single shift.

Before June 2025

After 2022, cannabis had been removed from the narcotics list, and thousands of dispensaries operated in a permissive grey zone. In practice, recreational buying was easy, prescription requirements were loosely enforced, and Thailand had a reputation as Asia's most open cannabis market. That was the environment most global coverage described, and it is the mental model many visitors still carry.

After June 2025

On 25 June 2025, cannabis flower was reclassified as a controlled herb under traditional-medicine law. Recreational sale and possession without a prescription became illegal. Buying legally now requires a PT33 prescription and a licensed dispensary with medical supervision. Further regulations in January and April 2026 tightened licensing and extract control. Thousands of shops closed because they could not meet the new rules.

What stayed legal

Medical access did not disappear. With a valid Thai prescription, cannabis remains legally available. CBD products under 0.2 percent THC remained relatively accessible. And the underlying industry, now smaller and medical-only, continued rather than vanishing. The change was a narrowing and a tightening, not a total prohibition.