Amphetamine-like component of fen-phen that suppresses appetite by increasing seratonin levels in the brain.

is an anorexigenic agent (appetite suppressant) that markedly decreases brain serotonin. Studies have shown 30-40 percent of autistic people have high levels of serotonin, one of the substances which help transmit impulses between brain cells. One case study in 1982 suggested that Fenfluramine significantly improved behaviour (Geller, Ritvo, Freeman, & Yuweiler, 1982). Further studies are conflicting, and most do not support this theory.

a chemical in a diet pill called Pondimin that caused heart problems. The drug is not sold anymore.  171