Obesity has become a worldwide problem. What’s more alarming is the other high risk conditions associated with obesity like diabetes, angina and other heart problems. As a last resort, many people lose weight by taking diet pills. Adipex diet pills have become very popular because it is proven effective. Phentermine is the generic name of Adipex diet pill. It is an appetite suppressant and energy booster. Although it is safe, Adipex side effects can happen like sleeping disorder, irritability and skin problems.