What is phentermine and how does it work?

Phentermine is a stimulant similar to amphetamines. It activates the central nervous system (nerves and brain), raising heart rate and blood pressure while lowering appetite. Phentermine is a weight-loss medication that is used in conjunction with a healthy diet and exercise program to manage obesity, particularly in patients who have risk factors such as high blood pressure, high cholesterol, or diabetes.

Follow your doctor's instructions when taking phentermine. Read all drug guides or instruction sheets and follow all guidelines on your prescription label. Your doctor may adjust your dose from time to time. Doses are usually given one to two hours before or after breakfast. Pay close attention to your doctor's dosing instructions. Never use more phentermine than prescribed or for longer than recommended. Taking more of this drug will not improve its effectiveness and may result in serious, life-threatening side effects.This medication should only be used for a brief period of time. After a few weeks, the effects of appetite suppression may fade. Phentermine has the potential to become addictive. Addiction, overdose, and death can all result from misuse. It is illegal to sell or give away this drug. If you think this prescription isn't functioning as effectively as it should or if you haven't dropped at least 4 pounds in four weeks, call your doctor right away. If you suddenly stop using this prescription, you may experience unpleasant withdrawal symptoms. Inquire with your doctor about how to safely discontinue taking this medication.Store away from moisture and heat at room temperature. When not in use, keep the bottle tightly closed.