This product has a broad-spectrum antimicrobial effect in vitro, including aerobic Gram-negative and Gram-positive bacteria, anaerobes, Rickettsia, spirochetes and Chlamydia. It has bactericidal effects on Haemophilus influenzae, Streptococcus pneumoniae and Neisseria meningitidis; it only has antibacterial effects on anaerobic bacteria such as Staphylococcus aureus, Streptococcus pyogenes, Streptococcus viridans, Group B hemolytic Streptococcus, Escherichia coli, Klebsiella pneumoniae, Proteus mirabilis, Salmonella typhi, Salmonella paratyphi, Shigella, Bacteroides fragilis, etc. Pseudomonas aeruginosa, Acinetobacter, Enterobacter, Serratia marcescens, indole-positive Proteus, methicillin-resistant Staphylococcus and Enterococcus are usually resistant to chloramphenicol. Chloramphenicol is fat-soluble, enters bacterial cells by diffusion, and reversibly binds to the 50S subunit of bacterial ribosomes, inhibiting the formation of peptide chains, thereby preventing protein synthesis.

It has the effect of competitively blocking the binding of histamine to H2 receptors. It inhibits the effect of gastric acid, which is 5 to 12 times that of cimetidine in terms of moles. Therefore, it is a potent H2 receptor blocker

Competitively blocks the binding of histamine to H2 receptors, inhibits gastric acid secretion, and is a potent H2 receptor blocker

In vivo, it competitively inhibits the rate-limiting enzyme hydroxymethylglutaryl coenzyme A reductase in the cholesterol synthesis process, reducing the synthesis of cholesterol and increasing the synthesis of low-density lipoprotein receptors. Its main site of action is in the liver, resulting in lower blood cholesterol and low-density lipoprotein cholesterol levels, thereby playing a role in the prevention and treatment of atherosclerosis and coronary heart disease. It also reduces serum triglyceride levels and increases blood high-density lipoprotein levels.

This product has a broad-spectrum antibacterial effect, especially high antibacterial activity against aerobic Gram-negative bacilli. It has good antibacterial activity in vitro against the following bacteria: most bacteria of the Enterobacteriaceae family, including Citrobacter, Enterobacter cloacae, Enterobacter aerogenes, Escherichia coli, Klebsiella, Proteus, Salmonella, Shigella, Vibrio, Yersinia, etc. It often has antibacterial activity against multi-drug resistant bacteria. It has high antibacterial activity against penicillin-resistant Neisseria gonorrhoeae, enzyme-producing Haemophilus influenzae and Moraxella. It has antibacterial activity against most strains of Pseudomonas such as Pseudomonas aeruginosa. This product has antibacterial activity against methicillin-sensitive Staphylococcus aureus, and only moderate antibacterial activity against Streptococcus pneumoniae, hemolytic Streptococcus and Enterococcus faecalis. It has good antimicrobial activity against Chlamydia trachomatis, Mycoplasma, Legionella, and also has antibacterial activity against Mycobacterium tuberculosis and atypical mycobacteria. Poor antibacterial activity against anaerobic bacteria. Ofloxacin is a bactericide that acts on the A subunit of bacterial DNA helicase, inhibiting DNA synthesis and replication, leading to bacterial death.

It has a broad-spectrum antibacterial effect, especially high antibacterial activity against aerobic Gram-negative bacteria, and has antibacterial activity against most bacteria of the Enterobacteriaceae family, penicillin-resistant Neisseria gonorrhoeae, enzyme-producing Haemophilus influenzae and Moraxella, Pseudomonas aeruginosa, etc. It has antibacterial activity against methicillin-sensitive Staphylococcus aureus, and only moderate antibacterial activity against Streptococcus pneumoniae, hemolytic Streptococcus and Enterococcus faecalis. It has good antimicrobial effects on Chlamydia trachomatis, Mycoplasma, and Legionella, and also has antibacterial activity against Mycobacterium tuberculosis and atypical mycobacteria. It has poor antibacterial activity against anaerobic bacteria. It acts on the A subunit of bacterial DNA helicase, inhibiting DNA synthesis and replication, leading to bacterial death.