fen-phen

noun

\ ˈfen-ˌfen

Definition of fen-phen

1 : a former diet drug combination of phentermine with either fenfluramine or dexfenfluramine

— called also phen-fen

2 : an herbal preparation typically containing ephedra and Saint-John's-wort that was used as an appetite suppressant until one of its ingredients (ephedra) was banned in the U.S. by the FDA in 2004 Herbal fen-phen users who take a cough or cold remedy containing decongestants, which are similar in action to ephedra, are unwittingly double-dosing on stimulants.— Richard Harkness

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The first known use of fen-phen was in 1993

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fen-phen

noun

\ ˈfen-ˌfen

Medical Definition of fen-phen

1 : a former diet drug combination of phentermine with either fenfluramine or dexfenfluramine that was used as an appetite suppressant in the treatment of obesity but was voluntarily withdrawn from the market in 1997 due to its association with heart disease

— called also phen-fen

2 : an herbal preparation typically containing ephedra and Saint-John's-wort that was used as an appetite suppressant until one of its ingredients (ephedra) was banned in the U.S. by the FDA in 2004

— called also phen-fen