In  2015, Efficacy of CBD-enriched cannabis extracts for treatment of pediatric epilepsy: A potential role for infantile spasms and Lennox–Gastaut syndrome

BACKGROUND: We conducted a brief online survey of parents who administered CBD-enriched cannabis for the treatment of their children's epilepsy. We specifically recruited parents of children with IS and LGS and focused on perceived efficacy, dosage, and tolerability

You can read the full article here => http://www.epilepsybehavior.com/article/S1525-5050(15)00157-2/fulltext