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Let's talk about medical cannabis. Here's the truth!

Dr. Priya Sammani (MBBS)
Medically Reviewed by Dr. Priya Sammani (MBBS) ✓ Medically Reviewed
📅 Updated: Sep 19, 2025 • ⏱ 6 min read • Editorial Policy
Let's talk about medical cannabis. Here's the truth!
Table of Contents ▾
You've probably seen 'hemp' or 'cannabis' used as a medicine for some ailments on TV, in movies, or on the internet. You've probably wondered, "Can this really cure diseases? Is it legal to do so? What if I use this for my chronic pain?" If these questions are on your mind, let's talk about this a little deeper and more simply today. Because there is a lot of misinformation circulating around this topic.
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First, let's understand: What is 'Cannabis'?

Simply put, hemp is a plant. This plant contains hundreds of chemical compounds that can affect our bodies. But among these, two main compounds are the most talked about in the medical world. If you understand these two, half of this topic will be clear to you. They are: 1. THC (Tetrahydrocannabinol): This is the main reason why we feel "high" or "high" when we use hemp. Although this compound has the ability to reduce pain, it can also cause side effects such as anxiety and confusion. 2. CBD (Cannabidiol): This compound does not cause intoxication like THC. Instead, research has found that it helps control some medical conditions such as epilepsy , and reduces pain and anxiety.
The important thing is that "medical cannabis " does not refer to recreational cannabis. It refers to medicines that contain specific amounts of THC and CBD, and are used under the supervision of a doctor, as a treatment for specific medical conditions.
Characteristic THC (causes intoxication) CBD (non-intoxicating compound)
Inducing a high Yes, mainly done No
Medical benefits As a pain reliever, for nausea caused by cancer chemotherapy Conditions such as epilepsy, anxiety, and chronic pain
Side effects Increased heart rate, memory problems, anxiety Usually mild, but some may experience fatigue and diarrhea

Let's talk about the law: What is the situation in the world and in Sri Lanka?

This is where many people get confused. The laws regarding medical cannabis vary greatly from country to country.

State of the world

Some countries (e.g. Canada, Germany, Australia) have legalized the use of medical cannabis under strict regulations. This means that these drugs can only be purchased from licensed pharmacies if prescribed by a doctor. In some other countries, only products containing CBD are legal. However, in many countries around the world, the possession, sale, or use of cannabis in any form is completely prohibited.

How is the situation in Sri Lanka?

This is very important. According to the law of Sri Lanka, possession, cultivation, transportation and sale of cannabis (marijuana) for recreational or personal use is completely illegal and is a punishable offense. However, in our country's traditional Ayurvedic system of medicine, under very strict regulations and under the supervision of the Department of Ayurveda, cannabis is used to produce some Ayurvedic medicines. These are only dispensed by licensed Ayurvedic doctors. Therefore, even if someone says "this is medicine", doing anything related to cannabis without a legal license poses serious legal problems.
So, don't use cannabis you get from a friend or someone else as "medicine." You don't know what it contains or how much. And it's illegal.

If you're considering medical cannabis, how can you protect yourself?

No matter where you are in the world, the first thing you should do if you are considering something like this is to talk to your doctor. This could interact with your medication, especially if you are taking medication for another condition. In addition, be aware of the following:
  • Never drive: Driving while using medical cannabis (especially those containing THC) is illegal in all countries. It puts your life and the lives of others at risk.
  • Don't buy from the black market: There is no guarantee of the purity of things sold illegally. They may contain dangerous chemicals , heavy metals, etc. And it is against the law.
  • Don't take it between countries: Taking something that is legal in one country into another may be illegal. You could get into a lot of trouble at the airport.
  • It's not a cure-all: While there is evidence that it may be helpful for some chronic pain, side effects of cancer chemotherapy, and conditions like glaucoma , it's not appropriate for every condition. That's a decision that should be made by your doctor.

💡 Take-Home Message

  • Medical cannabis is a complex topic. Don't believe everything you hear or see about it.
  • THC is the compound that causes intoxication. CBD is the non-intoxicating compound that is said to have medical benefits.
  • In Sri Lanka, it is illegal for an ordinary person to possess or use cannabis. It is used in Ayurvedic medicine only under very strict regulations.
  • If you are considering treatment for any medical condition, always consult your doctor first. Do not self-treat based on information on the Internet.
  • Never purchase cannabis or related products from illegal sources. It is very dangerous to your health and legal safety.
Medical Cannabis, Medical Cannabis, Cannabis, THC, CBD, Cannabis Law, Sri Lanka

❓ FAQ

Frequently Asked Medical Questions (FAQ)

Evidence-based clinical answers to common patient questions

If you're considering medical cannabis, how can you protect yourself?

Key points include: Never drive: Driving while using medical cannabis (especially those containing THC) is illegal in all countries. It puts your life and the lives of others at risk.; Don't buy from the black market: There is no guarantee of the purity of things sold illegally. They may contain dangerous chemicals , heavy metals.

When should you consult a doctor or healthcare professional?

If you experience persistent, worsening, or concerning symptoms, or before starting any new treatment or medication, always consult a qualified physician or healthcare provider for personalized medical advice.

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⚠️ Important: Medical articles and information on Nirogi Lanka are strictly for educational and awareness purposes and do not substitute professional medical advice, diagnosis, or treatment. Always consult a qualified physician for any medical concerns.