The first time Lori Tipton tried MDMA, she was skeptical it would make a difference.
"I really was, at the beginning, very nervous," Tipton remembers.
MDMA is the main ingredient in club drugs ecstasy or molly. But Tipton wasn't taking pills sold on the street to get high at a party.
She was trying to treat her post-traumatic stress disorder, with the help of licensed therapists.
Tipton was given a dose of pure MDMA. Then she lay down in a quiet room with two specially-trained psychotherapists, one woman and one man.