doxepin hydrochloride doxepin • doxographer · · · Info · Definitions · Synonyms · Characters · · doxepin hydrochloride · · Text Common · · Latin · · Scripts 21 · · Length 7 · · Syllables Definitions · · · (noun) a tricyclic antidepressant (trade names Adapin and Sinequan) with numerous side effects (dry mouth and sedation and gastrointestinal disturbances). Synonyms: doxepin, doxepin hydrochloride, Adapin, Sinequan. · · Noun Definition 1 Synonyms · · · doxepin · · Synonym 1 adapin · · Synonym 2 sinequan · · Synonym 3 Characters · · space U+0020 c latin small letter c U+0063 d latin small letter d U+0064 e latin small letter e U+0065 h latin small letter h U+0068 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E o latin small letter o U+006F p latin small letter p U+0070 r latin small letter r U+0072 x latin small letter x U+0078 y latin small letter y U+0079