It has both histamine H1 receptor antagonism and the effect of inhibiting the release of allergic reaction mediators. It not only has a strong anti-allergic effect, but also has a longer duration of efficacy. Therefore, it is more effective in preventing various bronchial asthma attacks and exogenous asthma than endogenous asthma.

This product is a first-generation cephalosporin, which has good antibacterial effect on some strains of Gram-positive cocci such as non-penicillinase-producing and penicillinase-producing Staphylococcus aureus, coagulase-negative Staphylococcus, group A hemolytic Streptococcus, Streptococcus pneumoniae and viridans Streptococcus. Anaerobic Gram-positive bacteria are mostly sensitive to this product, and Bacteroides fragilis is resistant to this product. Methicillin-resistant Staphylococci and Enterococci are resistant to this product. The effect of this product on Gram-positive and Gram-negative bacteria is similar to that of cephalexin. This product has a certain effect on Neisseria gonorrhoeae, and is also active against enzyme-producing Neisseria gonorrhoeae; its activity against Haemophilus influenzae is poor.

This product is a fluoroquinolone antibacterial drug with a broad-spectrum antibacterial effect, especially high antibacterial activity against aerobic Gram-negative bacteria. It has good antibacterial activity against the following bacteria in vitro: most bacteria of the Enterobacteriaceae family, including Citrobacter, Enterobacter cloacae, Enterobacter aerogenes and other Enterobacter species, Escherichia coli, Klebsiella, Proteus, Salmonella, Shigella, Vibrio, Yersinia, etc. Norfloxacin also has antibacterial activity against multi-drug resistant bacteria in vitro. It also has good antibacterial effects on penicillin-resistant Neisseria gonorrhoeae, Haemophilus influenzae and Moraxella catarrhalis. Norfloxacin is a bactericide that acts on the A subunit of bacterial DNA helicase, inhibiting DNA synthesis and replication, leading to bacterial death.

H2 receptor inhibitor, which has the effect of inhibiting gastric acid secretion. It is rapidly absorbed through the gastrointestinal tract after oral administration.

This product is a histamine H2 receptor antagonist, which has the function of inhibiting gastric acid secretion. It can effectively inhibit the basic gastric acid secretion and gastric acid secretion caused by various reasons (such as food, histamine, pentagastrin, caffeine and insulin, etc.), reduce the amount of secretion and acidity, and prevent or reduce the corrosive damage of gastric mucosa caused by bile salts, alcohol, aspirin and other non-steroidal anti-inflammatory drugs, and has obvious curative effect on stress ulcer and upper gastrointestinal bleeding. In addition, this product has anti-androgen effect and has certain value in the treatment of hirsutism; it can also weaken the activity of immunosuppressive cells, enhance immune response, thereby inhibiting tumor metastasis and prolonging survival. According to foreign data reports, this product can also effectively treat acute intermittent porphyria.