Cannabis in Thailand - A Guide to the Laws for Tourists

Where the law stands: cannabis came off Thailand's narcotics list in June 2022 and recreational use was widely tolerated for the three years that followed. That ended on 25 June 2025, when the cannabis flower was reclassified as a controlled herb. Buying cannabis now requires a prescription from a licensed doctor, traditional practitioner, pharmacist or dentist, and recreational sale and advertising are prohibited. These rules have moved more than once, so confirm the current position before you travel, buy or carry anything.

Cannabis, also known as ganja, is the native plant of Thailand and is considered to be of the same species as hemp. It has been used for its various medicinal properties to relieve pain, ease women’s labor pains, deal with the loss of appetite, solve sleep issues, improve blood circulation, and more but was, for the longest time, part of the Category 5 narcotics list. Although its use for medical purposes with a prescription has been legal since 2018, it was only taken off the narcotics list in June 2022. However, this recent decriminalization has brought about a lot of confusion about what is and isn’t allowed with regards to cannabis consumption in the country. And if you are a tourist, it might be even more confusing for you, so here is everything you need to know about Thailand’s rules on cannabis consumption.

Is it legal to import or export cannabis here?

While domestically grown cannabis plants are no longer considered a narcotic drug, bringing or taking cannabis seeds or parts of the plant into or outside Thailand is prohibited. One must seek permission from the Ministry of Agriculture and Cooperatives in order to import cannabis seeds.

Which cannabis products are still considered to be narcotics?

Cannabis products or extracts such as cosmetics, food supplements, edibles, etc. containing Tetrahydrocannabinol or THC of more than 0.2% by weight are still considered narcotics.

Are there any restrictions on who can consume marijuana?

Yes, it is illegal to sell cannabis to those under the age of 20, pregnant or breastfeeding, unless it is done under the supervision of experts.

Where can one smoke weed in Thailand?

Smoking marijuana is allowed at an individual’s residence but anyone caught smoking in a public space such as a mall, school or temple can be fined 25,000 baht and imprisoned for 3 months.

Where can one find/consume cannabis food products in Thailand?

Food products containing ganja can be consumed only at licensed restaurants but keep in mind that the use of cannabis flower buds in food items is prohibited.

What are the rules pertaining to the sale of cannabis flowers in Thailand?

Cannabis flowers can neither be sold online nor through vending machines, and since June 2025 they may only be dispensed against a prescription.

Where can one buy weed products in Thailand?

Thailand has thousands of licensed dispensaries, but since June 2025 they may sell only against a prescription, and recreational sales are prohibited. Buy from a licensed dispensary and expect to present a prescription for anything containing the flower. Products with a THC level below 0.2% remain more widely available. Buyers must be at least 20 years old, and sale to pregnant and breastfeeding women is not permitted without a doctor's approval.

Is it permissible to cultivate cannabis in Thailand?

In order to cultivate cannabis, one needs to register with the country’s Food and Drug Administration “Plook Ganja” application which can also be done through their website.

Can cannabis be used for research purposes?

Yes, but it is necessary to acquire a permit from the Department of Thai Traditional and Alternative Medicine to use cannabis flower buds for research or even for processing for commercial purposes.

Where can one find cannabis health products in Thailand? Does one require a prescription for the same?

The only cannabis health products that are legal are the ones approved by the Thai Food and Drug Administration; they are available at public and private clinics, hospitals, and pharmacies. Yes, a prescription is needed to purchase such herbal medicines.

Is there a limit on the amount of cannabis that can be consumed by an individual in Thailand?

There is no limit on the amount of weed that can be consumed given that it could impair motor coordination, judgment, and reaction time, people are strongly advised against driving after consuming it; it is said that the effects start showing between 30 minutes to 2 hours after consumption and can last about 24 hours.

How to deal with any side effects of cannabis?

In case of any side effects, which include dizziness, dry mouth, drowsiness, extreme thirst, and change in blood pressure, one can drink water and rest to feel better. However, seek immediate medical help in case of serious problems like irregular heartbeat, constant vomiting, syncope, heart attack, etc.

It is true that cannabis consumption is no longer illegal in Thailand but the rules moderating or governing this consumption are quite strict and as a tourist, it is advisable to read these regulations and adhere to them so as to avoid getting into trouble. Keep in mind that cannabis consumption, in its different forms, can lead to varied unpredictable effects on your mind and body so you must be careful when engaging in such activities. Furthermore, ensure that when leaving Thailand, you check your own country’s rules pertaining to cannabis possession or export so that you avoid any issues upon arrival.

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