The drug marketed as PhenPhen, discontinued because of its association with pulmonary hypertension, was a combination of two drugs – fenfluramine and phentermine. The unsafe part of this duo was fenfluramine, NOT phentermine. Phentermine has been used as an appetite suppressant for over 50 years, and is approved by the FDA as a safe and effective tool for losing weight, when used appropriately and under the care of a physician. The use of this drug under a medical doctor is  important, and can affect whether or not you are successful in keeping your weight off.

At Peak Nutrition & Weight Loss Clinic, we use a natural supplement called Pro Thin to gradually wean patients off Phentermine when they have reached their goal weight. This process minimizes the chance of gaining the weight back.