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Medical Definition of Diphenoxylate hydrochloride
1. 1-(3-Cyano-3,3-diphenylpropyl)-4-phenylpiperidine-4-carboxylic acid ethyl ester hydrochloride;an antidiarrhoeal agent, chemically related to meperidine, that inhibits rhythmic contraction of smooth muscle; it has modest addiction liability. (05 Mar 2000)