Epilepsy was the most frequently studied medical condition, with all 11 studies describing beneficial effects of CBD in reducing the severity or frequency of seizures.12, 13, 16, 24, 26, 27, 28, 33, 34, 35, 36 Within the 4 conducted RCTs (n = 531), an average dosing of 15 mg/kg/d was used where CBD was administered successfully as an add‐on therapy to usual anti‐epileptic drugs.12, 13, 16, 24 Significant improvements were observed compared to placebo as an add‐on therapy. The gene discussed is OPN1MW; the disease is epilepsy.