really think is here for cbdv to treat autism? >> i think the big advantages are it may have less side effects than other medicines that are used to treat severe disruptive behavior. >> in a sign of how quickly things changed, when this trial began two years ago, cbdv was still considered a schedule one drug and had to be locked in this safe. >> ready carlos? >> squirt it on the side of your mouth, okay? >> when you talk about the ups and downs, i mean, how low has it gone? >> pretty low. low enough that he attacked me, but what he's going through, sometimes i have to think for him and myself. >> somebody said there's something that could help treat autism. how would it help you? >> probably i don't have to worry about getting angry, and i