noun Pharmacology.
a drug that is a combination of fenfluramine and phentermine, formerly used in treating obesity but withdrawn from the market because of its potential to cause valvular heart disease.
Also, fen/phen.


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Main Entry:  fen-phen
Part of Speech:  n
Definition:  a former prescription diet drug of fenfluramine hydrochloride or dexfenfluramine combined with phentermine, and now banned; also called phen-fen
Etymology:  1994-99; fenfluramine + phentermine
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American Heritage
Medical Dictionary

fen-phen (fěn'fěn)
A combination of two drugs, fenfluramine hydrochloride and phentermine, formerly prescribed for weight loss.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences
In that case, the appellant took the diet pill fen-phen and later developed mitral valve regurgitation and aortic insufficiency.
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