Wiktionary
furfenorex
n. A stimulant drug formerly used as an appetite suppressant.
Wikipedia
Furfenorex
Furfenorex (Frugalan), also known as furfurylmethylamphetamine, is a stimulant drug which was developed in the 1960s and used as an appetite suppressant. It produces methamphetamine as a metabolite, and is no longer marketed, due to possible problems with abuse.