In general, Phentermine is a drug used to treat obesity. Phentermine is a prescription medication that aids in losing weight. Although it is proven to be effective, its use is only indicated for short term. A patient must meet necessary requirements before a physician can prescribe Phentermine. A purchase lithium medication body aleve mechanism of action mass aleve mechanism of action index or BMI is a tool used aleve mechanism of download viagra song action to determine obesity.