What is phetamine?

Phentermine, a contraction for "phenyl-tertiary-butylamine", is an appetite suppressant of the amphetamine and phenethylamine class. It is approved as an appetite suppressant to help reduce weight in obese patients when used short-term and combined with exercise, diet, and behavioral modification. It is typically prescribed for individuals who are at increased medical risk because of their weight and works by helping to release certain chemicals in the brain that control appetite.