Magnesium ions can inhibit the activity of the central nervous system, inhibit the release of acetylcholine at the motor nerve-muscle junction, block conduction at the neuromuscular junction, reduce or relieve muscle contraction, and at the same time have a dilating effect on vascular smooth muscle, dilate spasmodic peripheral blood vessels, and lower blood pressure. Therefore, it has a preventive and therapeutic effect on eclampsia. It also has an inhibitory effect on uterine smooth muscle contraction and can be used to treat premature delivery.

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This product is a phosphodiesterase inhibitor, with positive inotropic and vasodilatory effects. The positive inotropic effect is mainly through the inhibition of phosphodiesterase, which increases the concentration of cyclic adenosine monophosphate (CAMP) in myocardial cells, increases intracellular calcium, strengthens myocardial contractility, and increases cardiac output; its vasodilatory effect may be directly acting on small arteries, or after the improvement of cardiac function, the excitement of sympathetic nerves is reduced, thereby reducing the heart's preload and afterload, reducing left ventricular filling pressure, improving left ventricular function, and increasing cardiac index, but it has no significant effect on mean arterial pressure and heart rate.

This product is a H2 receptor blocker of the guanyl thiazole class, which has the characteristics of high affinity for H2 receptors, and has a significant inhibitory effect on gastric acid secretion, and has an inhibitory effect on basal secretion and the increase of gastric acid and pepsin caused by various stimuli. This product does not change the gastric emptying rate, does not interfere with pancreatic function, and has no adverse effects on the cardiovascular system and kidney function. This product is different from cimetidine, but it is similar to ranitidine, that is, long-term high-dose treatment does not cause adverse reactions of androgen antagonism such as male breast development, impotence, lack of sexual desire, and female breast pain, galactorrhea, etc. It has no teratogenic, carcinogenic, drug enzyme inhibitory and androgen inhibitory effects.

It promotes brain metabolism and improves brain circulation by reducing cerebrovascular resistance and increasing cerebral blood flow. It also enhances the function of the ascending activation system of the brainstem reticular structure, the function of the pyramidal system, improves motor paralysis, and has a certain effect on promoting the recovery of brain function and awakening.