<P> After reports of valvular heart disease and pulmonary hypertension , primarily in women who had been undergoing treatment with fen - phen or ( dex ) fenfluramine , the FDA requested its withdrawal from the market in September 1997 . </P>
<P> After reports of valvular heart disease and pulmonary hypertension , primarily in women who had been undergoing treatment with fen - phen or ( dex ) fenfluramine , the FDA requested its withdrawal from the market in September 1997 . </P>
when was fen phen taken off the market
when was fen phen taken off the market
September 1997
September 1997