A broad-spectrum antiviral drug that inhibits the growth of multiple viruses in vitro, including respiratory syncytial virus, influenza virus, hepatitis A virus, and adenovirus. After entering the virus-infected cells, the drug is rapidly phosphorylated, and its product acts as a competitive inhibitor of viral synthase, inhibiting inosine monophosphate dehydrogenase, influenza virus RNA polymerase, and mRNA guanosine transferase, thereby causing a reduction in intracellular guanosine triphosphate, impairing viral RNA and protein synthesis, and inhibiting viral replication and transmission. It may also have an immune effect and neutralizing antibody effect on respiratory syncytial virus.

A coenzyme for acetylation reactions in the body. It participates in acetylation reactions in the body and plays an important role in the metabolism of sugar, fat and protein, such as the tricarboxylic acid cycle, liver glycogen accumulation, acetylcholine synthesis, lowering cholesterol, regulating blood lipid content and synthesizing steroid substances, which are all closely related to this product.

This product is a nucleoside derivative, which promotes brain metabolism and improves brain circulation by reducing cerebrovascular resistance and increasing cerebral blood flow. In addition, it can enhance the function of the ascending activation system of the brainstem reticular structure, enhance the function of the pyramidal system, and improve motor paralysis, so it has a certain effect on promoting the recovery of brain function and promoting awakening.

This product is a diamine oxidase inhibitor, which has a more obvious dilating effect on cerebrovascular and cardiovascular systems, especially on the vertebral artery system, significantly increasing the blood flow of the heart, brain and peripheral circulation, improving blood circulation, and lowering systemic blood pressure. In addition, it can increase the blood flow of the cochlea and anterior base, thereby eliminating inner ear vertigo, tinnitus and ear closure, and can also increase capillary permeability, promote the absorption of extracellular fluid, and eliminate lymphatic edema; it can counteract the vasoconstrictive effect of catecholamines and lower arterial pressure, and has the effect of inhibiting plasma coagulation and ADP-induced platelet aggregation, can prolong the time of thrombosis in vitro in rats, and has a slight diuretic effect.

This product is an anti-deoxyribonucleic acid (DNA) virus drug. Its pharmacological action is to bind to the viral deoxyribonucleic acid polymerase, reduce its activity and inhibit DNA synthesis. After entering the cell, adenosine monophosphate is phosphorylated to generate adenosine diphosphate (Ara-ADP) and adenosine triphosphate (Ara-ATP). The antiviral activity is mainly caused by adenosine triphosphate (Ara-ATP). Ara-ATP and deoxyadenosine triphosphate (dATP) compete to bind to viral DNAP, thereby inhibiting the activity of the enzyme and the synthesis of viral DNA. At the same time, it inhibits the activity of viral nucleotide reductase and inhibits the synthesis of viral DNA. It can also inhibit the activity of viral DNA terminal deoxynucleotidyl transferase, so that Ara-A penetrates into the viral DNA and connects to the end of the DNA chain 3prime;-OH position, inhibiting the continued synthesis of viral DNA.