Hi Paxil - Prescription Information PAXIL (paroxetine hydrochloride) is an orally administered psychotropic drug. It is the hydrochloride salt of a phenylpiperidine compound identified chemically as (-)-trans-4R-(4'-fluorophenyl)-3S-<(3',4'-methylenedioxyphenoxy) methyl> piperidine hydrochloride hemihydrate and has the empirical formula of C19H20FNO3•HCl•1/2H2O. read more about paxil - Paxil (http://paxil-description.blogspot.com ) Bye