The amount of CBD needed to produce significant effects varies by condition, according to both Blessing and Carson. “In clinical trials for schizophrenia they would give 800 milligrams,” says Blessing. “In our clinical trial to treat PTSD, we are giving 600 mg per day.” In the clinical trial for Epidiolex, Carson says, the clinicians administered 10 milligrams per kilogram the subject weighed — meaning a person who weighs 50 kilograms (or 110 pounds) would be given 500 milligrams of CBD.
Although CBD seems destined to play an important role as a therapeutic agent for a growing number of medical indications, we should seriously ask ourselves if the current unregulated production and sale of CBD oils is done responsibly. Despite the fact that CBD is mainly sold as “just” a food supplement, it is often used by severely ill people with the intention of improving their body functions in a way that their standard medication could not. This obviously puts CBD uncomfortably close to the realm of medicines. Interestingly, the WHO, based on a review of available scientific data and input from international experts, recently concluded that CBD does not immediately require rescheduling as a drug , although a fuller review on the risks and benefits of CBD is still being planned. Nevertheless, perhaps the use of CBD products should be assessed in a broader perspective, to cover all ingredients used in the preparation, as well as any contaminants that are already known to be common in recreational cannabis.