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.

Extract from the above information

Broad-spectrum antiepileptic drugs may be degraded into valproic acid through the action of intestinal microorganisms, increasing the synthesis of gamma-aminobutyric acid (GABA) and reducing the degradation of GABA, thereby increasing the concentration of the inhibitory neurotransmitter GABA, reducing the excitation of neurons and inhibiting seizures.

1. Anti-inflammatory effects: (1) Anti-allergic effects, inhibiting local allergic necrosis and Schwartzman phenomenon, and enhancing the inhibitory effect of corticosteroids on stress responses; (2) Inhibiting the action of arachidonic acid metabolic enzymes, selectively inhibiting the phosphorylation of phospholipase A2 and lipoxygenase. 2. Immunomodulatory effects: (1) Regulating T cell activation; (2) Inducing g interferon; (3) Activating NK cells; (4) Promoting the differentiation of extrathymic T lymphocytes. 3. Inhibiting experimental hepatocyte damage: Inhibiting hepatocyte damage caused by carbon tetrachloride. 4. Inhibiting viral proliferation and inactivating viruses: Prolonging the survival of mice infected with MHV, preventing the occurrence of pox in rabbit cowpox virus, inhibiting the proliferation of herpes virus and inactivating the virus.

This product is a histamine H2 receptor blocker. It has a significant inhibitory effect on gastric acid secretion, and can also inhibit the secretion of pepsin, and has a certain protective effect on animal experimental ulcers. It takes effect about 1 hour after taking the medicine, and the effect can last for more than 12 hours.