This product is a third-generation angiotensin converting enzyme inhibitor, which can inhibit the activity of angiotensin converting enzyme, reduce the concentration of angiotensin II and aldosterone, increase plasma renin activity, lead to peripheral vasodilation and decreased vascular resistance, and thus produce a hypotensive effect. The hypotensive effect occurs within about 2 hours after oral administration, and the maximum hypotensive effect occurs about 4 to 6 hours after oral administration, which is consistent with the peak time of blood drug concentration (tmax). The hypotensive effect lasts for 24 hours, and there will be no blood pressure rebound after stopping the drug, and there is no significant change in heart rate after taking the drug.

It participates in amino acid metabolism, synthesis of neurotransmitters, synthesis of collagen and tissue cell interstitial, can reduce the permeability of capillaries, accelerate blood coagulation, stimulate coagulation function, promote iron absorption in the intestine, promote the decrease of blood lipids, increase resistance to infection, participate in detoxification function, and has antihistamine effect and prevents the formation of carcinogens (nitrosamines).

Nimodipine is a Ca2 channel blocker that inhibits smooth muscle contraction and relieves vasospasm by preventing Ca2 from entering cells. It has a strong effect on cerebral arteries, is lipophilic and can pass through the blood-brain barrier. It can be used to prevent vasospasm after subarachnoid hemorrhage and has protective and memory-promoting effects.

This product is an antiviral drug. It has an inhibitory effect on herpes simplex virus, varicella zoster virus, cytomegalovirus, etc. in vitro. After entering the cells infected by herpes virus, this product competes with deoxynucleoside for viral thymidine kinase or cell kinase, and the drug is phosphorylated into activated acyclovir triphosphate, and then inhibits viral replication in two ways: ① Interfering with viral DNA polymerase and inhibiting viral replication; ② Under the action of DNA polymerase, it binds to the growing DNA chain, causing the extension of the DNA chain to be interrupted. This product has a special affinity for viruses, but has low toxicity to mammalian host cells.