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Propoxyphene
Darvon; Propoxyphene Hydrochloride; Propoxyphene Hydrochloride, (R*,R*)-(+-)-Isomer; Propoxyphene Hydrochloride, (R*,S*)-(+-)-Isomer; Propoxyphene Hydrochloride, (R-(R*,R*))-Isomer; Propoxyphene Hydrochloride, (R-(R*,S*))-Isomer
A narcotic analgesic structurally related to METHADONE. Only the dextro-isomer has an analgesic effect; the levo-isomer appears to exert an antitussive effect.