In this Feb. 7, 2014 photo, Matt Figi hugs and tickles his once severely-ill 7-year-old daughter Charlotte, as they wander around inside a greenhouse for a special strain of medical marijuana known as Charlotte's Web, which was named after the girl early in her treatment, in a remote spot in the mountains west of Colorado Springs, Colo. A few years ago, Charlotte's doctors were out of ideas to help her. Suffering from a rare disorder known as Dravets syndrome, Charlotte had as many as 300 grand mal seizures a week, was confined to a wheelchair, went into repeated cardiac arrest and could barely speak. Now Charlotte is largely seizure-free, able to walk, talk and feed herself, with her parents attributing her dramatic improvement to this strain of medical cannabis. (AP Photo/Brennan Linsley)
Jason David administers oral drops of a medical marijuana tincture that he says has greatly helped control the symptoms of his son Jayden's severe epilepsy in Modesto, California, July 20, 2012. (Luis Sinco/Los Angeles Times/MCT) ORG XMIT: 1128768
