Synonyms: Isoquinoline,1-(3,4-diethoxybenzylidene)-6,7-diethoxy-1,2,3,4-tetrahydro-, hydrochloride(7CI,8CI);Isoquinoline,1-[(3,4-diethoxyphenyl)methylene]-6,7-diethoxy-1,2,3,4-tetrahydro-,hydrochloride (9CI);Drotaverin hydrochloride;Drotaverine hydrochloride;Drotaverinium chloride;Drotin;Isodihydroperparine hydrochloride;NOSH-BRA;No-Spa;No-Spa hydrochloride;Tetraspasmin-Lefa;