dex·fen·flu·ra·mine hydrochloride  (děks'fěn-flŏŏr'ə-mēn')  n. A drug that blocks the reuptake of serotonin by neurons of the central nervous system, formerly prescribed as an antiobesity agent, but removed from the market in 1997 because of its potential to damage heart valves. [dex(tro)- + fenfluramine hydrochloride.] |