Similar names: Isoquinoline, 1-[(3,4-diethoxyphenyl)methylene]-6,7-diethoxy-1,2,3,4-tetrahydro-, hydrochloride (1:1); 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