[fen-fen] /ˈfɛnˌfɛn/

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a drug that is a combination of fenfluramine and phentermine, formerly used in treating obesity but withdrawn from the market because of its potential to cause valvular heart disease.

a former prescription diet drug of fenfluramine hydrochloride or dexfenfluramine combined with phentermine, and now banned; also called phen-fen
Word Origin

1994-99; fenfluramine + phentermine

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


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