Updated September 2007- Phentermine is a drug that is commonly prescribed in the United States for weight loss.  It acts as an appetite suppressant by intercepting the body’s hunger signal to the brain.  The FDA recommends that the drug be used for no more than twelve weeks with close monitoring by a doctor, along with a plan of diet and exercise.  It is an amphetamine and labeled a controlled substance.  Patients may develop a serious addiction to the drug.

The drug was combined with fenfluramine and sold as the diet drug Fen-Phen.  Fenfluramine also works at suppressing appetite by making someone think they are full.  A study in 1992 found that the Phentermine and fenfluramine combination worked better than diet and exercise to help someone lose weight. 

In 1997 there were 24 cases of heart valve disease in people taking Fen-Phen.  A closer look at those taking the drug combination found that there was a thickening of the heart valves.  Later studies found that up to 30 percent of the people that had taken the drug showed signs of heart valve disease.  Primary Pulmonary Hypertension (PPH) is the name of the heart valve disease associated with Fen-Phen.     Fenfluramine was taken off the market.  Although the drug is no longer available it may take years for side effects to be felt.  Phentermine continued to be available to patients. 

Phentermine on its own has a lengthy list of side effects to watch for.  Insomnia is a common complaint of patients taking the drug.  It may also increase blood pressure and heart rate.  Heart palpitations, restlessness, and irritability are also common side effects.

In 2007, the Institute for Safe Medication Practices and the Division of Public Health Sciences, Wake Forest University School of Medicine, conducted a longitudinal Adverse Events Reporting System Review of the U.S. FDA's most dangerous drugs. The study found Phentermine to be one of the most dangerous drugs on the market with one of the highest numbers of adverse drug event reports.  Phentermine was the eleventh most dangerous drug, according to the FDA reports.  Over the eight years of the study, phentermine was found to have caused over 4,600 events resulting in disability or serious outcome requiring medical treatment.

If you have taken any of these drug products, it may be important to visit your doctor. In addition, it may be important to contactan attorney who can help you protect your legal rights and ensure that you receive your fair share of the settlement. Please keep in mind that there may be time limits within which you must file your claim.

Attorneys associated withInjuryBoard.com will evaluate your case free of charge. In addition, you will not pay any fees or costs unless your attorney recovers money for you. Please click on the free Ask An Attorney button to take advantage of this valuable service.

See Also

  1. Diet Drugs
  Name Size