This product is a dopamine 2 (D2) receptor antagonist, and also has a 5-hydroxytryptamine 4 (5-HT4) receptor agonist effect, and has a mild inhibitory effect on 5-HT3 receptors. It can act on dopamine receptors in the medullary emetic chemoreceptor zone (CTZ) to increase the threshold of CTZ, and has a strong central antiemetic effect. This product can also block hypothalamic dopamine receptors, inhibit prolactin inhibitory factor, and promote the secretion of prolactin, so it has a certain lactation effect. The inhibitory effect on other parts of the central nervous system is relatively small, with a weak sedative effect and less hypnotic effect. The effect on the gastrointestinal tract is mainly in the upper digestive tract, promoting the movement of the stomach and upper intestinal segments; increasing the tension of the gastrointestinal sphincter in the resting state, increasing the tension and contraction amplitude of the lower esophageal sphincter, and increasing the pressure at the lower end of the esophagus.

In severe hepatitis or liver dysfunction, the liver's conversion of ammonia to urea is impaired, resulting in increased blood ammonia and encephalopathy symptoms. The intake of glutamate and arginine is beneficial to reduce and eliminate blood ammonia, thereby improving encephalopathy symptoms.

In severe hepatitis or liver dysfunction, the liver's conversion of ammonia to urea is impaired, resulting in increased blood ammonia and encephalopathy symptoms. The intake of glutamate and arginine is beneficial to reduce and eliminate blood ammonia, thereby improving encephalopathy symptoms.

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.

It can form a thin film on the surface of damaged gastric mucosa, thereby resisting the invasion of gastric acid on the mucosa and protecting the gastric mucosa. In addition, sucralfate can absorb pepsin and neutralize gastric acid, but the effect is weak.