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噻吗心安是一种β-受体阻滞剂。其性质类似甲磺胺心定,对β_1-受体和β_2-受体的作用不具选择性,也没有明显的膜稳定作用(即奎尼丁样作用)及内在拟交感活性。但是,对异丙肾上腺素引起的心率过速的拮抗作用很强。
Thiomorphine is a beta-blocker. Its nature is similar to that of mesylamine, its effect on β 1 -receptors and β 2 -receptors is not selective and there is no significant membrane stabilization (ie quinidine-like effect) and intrinsic sympathomimetic activity. However, the antagonism of isoproterenol-induced tachycardia is strong.