It is recommended that you source a full spectrum CBD oil rather than a CBD crystal isolate if you wish to buy CBD oil medications, and that you are aware of the CBD percentage. If you choose to purchase even a 5% concentration from any of the snake oil salesmen, sorry – suppliers previously mentioned you will have to take 4 capsules at a time to even get remotely near the minimum recommended percentage levels for effective treatment and these will not be full spectrum.
In fact, the U.S. Food and Drug Administration (FDA) approved Epidiolex (a drug made with a purified form of CBD oil) in June 2018 for the treatment of seizures associated with two rare and severe forms of epilepsy in patients 2 years of age and older. These two epilepsy forms are known as Lennox-Gastaut syndrome and Dravet syndrome. Epidiolex is the first FDA-approved drug that contains a purified drug substance derived from marijuana.