Answer
In the Name of Allah, Most Gracious, Most Merciful.
All praise and thanks are due to Allah, and peace and blessings be upon His Messenger.
Responding to your question, Sheikh Ahmad Kutty, a senior lecturer and an Islamic scholar at the Islamic Institute of Toronto, Ontario, Canada, states:
Seeking medication in Islam
Islam teaches us to seek treatments and take medications when we get sick. However, we are also advised to avoid using forbidden things and resort to treatment that is proven effective without harmful side effects.
Can we use cannabidiol as medicine?
The case of cannabidiol does not fall under general medicine – with proven scientific benefits. In other words, as far as I know, it has not been recommended for public use.
Therefore, the answer to this question is dependent on the expert opinion of medical professionals. As far as I can learn from the sources, cannabidiol should be used only for cases that are proven to be effective and that too under the strict guidance of a medical professional.
For further details, please refer to the post here:
Cannabidiol (CBD)-what we know and what we don’t
Almighty Allah knows best.