>> reporter: the brothers say the oil is now helping hundreds of other children with epilepsy. the does, $250 a bottle. it lasts two months. >> i wanted to have some kids come up. we are gonna plant this flower. >> reporter: a number of the families who come to colorado seeking help wiped up at the realm of caring, a support group the stanleys helped establish. heather jackson runs realm of caring. zachai is her son. she says he has been seizure-free for the two years he has been on charlotte's web. >> people, they hear these stories, they see these children, they still find it hard to believe. >> i know. i mean, i would find it hard to believe if i wasn't living it. hopefully, what we will be able to do with the realm of caring foundation is to establish the research and collect it in a way that the science community can say that it's valid, because you're right, right now, his story is just anecdotal evidence. it is just a good story. it's a darn good story though.