Medical cannabis companies developing pharmaceuticals have largely focused on using purified cannabinoids as monotherapies to treat neurological diseases. This year, for example, Cambridge, U.K.-based GW Pharma plc gained FDA approval for Epidiolex (cannabidiol) to treat two rare pediatric epilepsies, Dravet syndrome and Lennox-Gastaut syndrome, and others are on GW's heels, developing drugs for epilepsy and pain indications. (See BioWorld Insight, Oct. 17, 2016.)