Also referred to as Clen, people who abuse this drug typically do it for its slimming effects. It is a stimulant similar to ephedrine, only much longer-lasting. When taken daily, the abuser can lose up to ten pounds in two weeks.
Clen is rumored to be very popular in Hollywood, especially slim It-girls. Nicole Richie and Ashlee Simpson are among those that have allegedly used Clenbuterol to lose weight.