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Published on 9 February 2012

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Mediator® ‘responsible’ for thousands of deaths in France

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Benfluorex, a fenfluramine derivative drug used in France under the name Mediator®, may be responsible for thousands of hospitalisations and deaths over a 30-year period, according to research published in the journal Pharmacoepidemiology & Drug Safety.

Mediator® was used in France from 1976 to 2009. Despite its anorexic properties, the drug was not marketed as an appetite suppressant but as an adjunct for the treatment of hyperlipidaemia and among overweight patients with type 2 diabetes.

Mahmoud Zureik, of the French National Institute of Health and Medical Research, and colleagues utilised existing data on benfluorex exposure in France, the risk of actual hospitalisation for valvular insufficiency, and mortality from vascular insufficiency as a basis for detailed calculations.

Results suggested that the use of benfluorex during the period 1976-2009 may have been responsible for around 3,100 hospitalisations and 1,300 deaths due to valvular insufficiency.

“Despite its similarity with the two appetite suppressants fenfluramine and dexfenfluramine, benfluorex was kept on the market for more than 30 years in France,” Zureik notes.

“French citizens, practitioners, politicians, and public health actors were seeking to understand why the French health products safety agency took so long to withdraw this drug which was of very limited efficacy and was dangerous.”

Because of this scandal, a new law has been passed that substantially modifies the regulatory system for drugs in France.

Pharmacoepidemiology & Drug Safety


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