LONDON — The Food and Drug Administration has given orphan drug designation to an experimental treatment for a rare form of epilepsy.
GW Pharmaceuticals said Friday that the FDA had granted the designation to Epidiolex for Dravet syndrome, a severe, drug-resistant form of epilepsy that begins in infancy. The drug is an oral liquid of a highly purified extract of cannabidiol, a non-psychoactive molecule derived from the cannabis plant.