For epilepsy: A prescription cannabidiol product (Epidiolex) has been used. The recommended starting dose is usually 2.5 mg/kg twice daily (5 mg/kg/day). After one week the dose can be increased to 5 mg/kg twice daily (10 mg/kg/day). If the person doesn't respond to this dose, the maximum recommended is 10 mg/kg twice daily (20 mg/kg/day). In some research, higher doses of up to 50 mg/kg daily have been used. There is no strong scientific evidence that nonprescription cannabidiol products are beneficial for epilepsy.
In the United States, the cannabidiol drug Epidiolex was approved by the Food and Drug Administration in 2018 for treatment of two epilepsy disorders. Since cannabis is a Schedule I controlled substance in the United States, other CBD formulations remain illegal to prescribe for medical use or to use as an ingredient in foods or dietary supplements. cannabidiol oil