Similar names: Papaverine hydrochloride; 1-(3,4-Dimethoxybenzyl)-6,7-dimethoxyisoquinoline hydrochloride; Isoquinoline, 1-[(3,4-dimethoxyphenyl)methyl]-6,7-dimethoxy-, hydrochloride; Isoquinoline, 6,7-dimethoxy-1-veratryl-, hydrochloride; 1-(3,4-Dimethoxybenzyl)-6,7-dimethoxyisoquinoline hydrochloride; 6,7,3',4'-Tetramethoxy-1-benzylisoquinoline hydrochloride; 6,7-Dimethoxy-1-(3,4-dimethoxybenzyl)isoquinoline hydrochloride; 6,7-Dimethoxy-1-veratrylisoquinoline hydrochloride; Artegodan; Cardiospan; Cardoverina; Cepaverin; Cerebid; Cerespan; Dispamil; Drapavel; Dynovas; Myobid; Optenyl; Pameion; Panergon; Papavarine chlorhydrate; Papaverinium chloride; Papaversan; Paptial TR; Pavabid; Pavacap; Pavacen; Pavadel; Pavagen; Pavakey; Pavased; Paveron; Ro-Papav; Spasmo Nit; Therapav; Vasal; Vasorin; Vasospan