It is an H2 receptor blocker that can sustainably inhibit gastric acid secretion; it acts on the capsaicin-sensitive afferent neurons in the gastric mucosa, protecting the gastric mucosa, promoting mucosal repair, increasing gastric mucosal blood flow and increasing gastric mucus secretion.

It has high activity against protozoa and anaerobic bacteria, and can inhibit most anaerobic bacteria; microaerophilic bacteria and Helicobacter pylori are sensitive to it; the mechanism of anti-amoeba protozoa is to inhibit its redox reaction. Its nitro group is reduced to a cytotoxin, which acts on the DNA metabolism process of bacteria and promotes bacterial death. Drug-resistant bacteria often lack nitroreductase and are resistant to this product.

Aminoglycoside antibiotics. It has good antibacterial effects on various Gram-negative and Gram-positive bacteria, and has good effects on various Enterobacteriaceae such as Escherichia coli, Klebsiella, Proteus, Salmonella, Shigella, Enterobacter, Serratia and Pseudomonas aeruginosa. Neisseria and Haemophilus influenzae are moderately sensitive to this product. It also has certain effects on Brucella, Yersinia pestis, Acinetobacter and Campylobacter fetus. It has good antibacterial effects on about 80% of methicillin-sensitive strains of Staphylococcus (including Staphylococcus aureus and coagulase-negative Staphylococci), but most methicillin-resistant strains are resistant to this product. It has poor effects on Streptococcus and Streptococcus pneumoniae, and most Enterococci are resistant to this product. When this product is used in combination with β-lactams, most of them can obtain synergistic antibacterial effects. The mechanism of action of this product is to bind to the 30S subunit of the bacterial ribosome and inhibit the synthesis of bacterial proteins. In recent years, the number of Gram-negative bacteria resistant to gentamicin has increased significantly.

Nonsteroidal anti-inflammatory analgesics, whose mechanism of action is to inhibit the synthesis of prostaglandins

It is related to the active conjugated double bond existing in the 1,5-position N of isoalloxazine in the vitamin B2 molecule. It can be used as both a hydrogen donor and a hydrogen transmitter. In the human body, it participates in redox reactions in the form of flavin adenine dinucleotide (FAD) and flavin mononucleotide (FMN), plays the role of hydrogen transmitter, and is a coenzyme of some important redox enzymes in the body. The main biochemical reactions it participates in include energy production in the respiratory chain, oxidation of amino acids and lipids, conversion of purine bases to uric acid, hydroxylation of aromatic compounds, synthesis of proteins and certain hormones, transport, storage and mobilization of iron, and participation in the metabolism of folic acid, pyridoxal and niacin. It participates in biological oxidation and energy metabolism in the body, and is related to the metabolism of carbohydrates, proteins, nucleic acids and fats. It can improve the body's utilization of protein, promote growth and development, maintain the integrity of the skin and cell membranes, and has the function of protecting the skin's hair follicle mucosa and sebaceous glands. It participates in cell growth metabolism and is an essential nutrient for the metabolism and repair of body tissues, such as strengthening liver function and regulating the secretion of adrenaline. It participates in the metabolism of vitamin B6 and niacin, and is a model of the coordinated action of B vitamins. FAD and FMN participate as cofactors in the conversion of tryptophan to niacin and the conversion of vitamin B6 to pyridoxal phosphate. It is related to the body's absorption, storage and mobilization of iron. It also has antioxidant activity, which may be related to flavin enzyme-glutathione reductase.