Natalie Pembleton, 13, of Yorba Linda, who has epilepsy, swings in Parque De Los Vaqueros in Placentia on Thursday, August 16, 2018. Natalie takes the drug, Epidiolex, to control her seizures. It is the first FDA-approved drug that contains a purified drug substance derived from marijuana to treat rare, severe forms of epilepsy. (Photo by Mark Rightmire, Orange County Register/SCNG)