Tetracycline antibiotics. This product is a broad-spectrum antibacterial agent. Many Rickettsia, Mycoplasma, Chlamydia, and Spirochete are sensitive to this product. Enterococci are resistant to it. Others such as Actinomycetes, Bacillus anthracis, Listeria monocytogenes, Clostridium, Nocardia, Vibrio, Brucella, Campylobacter, Yersinia, etc. are also sensitive to this product. Due to the widespread use of oxytetracycline and tetracyclines over the years, common clinical pathogens have serious resistance to oxytetracycline, including Gram-positive bacteria such as Staphylococcus and most Gram-negative bacteria. There is cross-resistance between this product and different varieties of tetracycline antibiotics. The mechanism of action of this product is that the drug can specifically bind to the A position of the 30S subunit of the bacterial ribosome, inhibit the growth of the peptide chain and affect the synthesis of bacterial proteins.

A third-generation quinolone broad-spectrum antibacterial drug that inhibits bacterial DNA helicase and has antibacterial activity against Gram-negative bacteria, Gram-positive bacteria and some anaerobic bacteria. It is highly sensitive to Enterobacteriaceae (such as Escherichia coli, Shigella, etc.), influenza bacillus, and gonococci, and also has a certain antibacterial effect on Acinetobacter, Pseudomonas aeruginosa, Staphylococcus, Pneumococcus, hemolytic Streptococcus, etc. There is no cross-resistance between it and other types of antibacterial drugs.

This product is a quinolone antibacterial drug. It has high antibacterial activity against Enterobacteriaceae such as Escherichia coli, Shigella, Klebsiella, Proteus, Enterobacter, etc.; Haemophilus influenzae and Neisseria gonorrhoeae are also highly sensitive to this product; it also has certain antibacterial effects on Pseudomonas such as Acinetobacter, Pseudomonas aeruginosa, Staphylococcus, Pneumococcus, and hemolytic Streptococcus. This product acts on the A subunit of DNA helicase in bacterial cells, inhibiting the synthesis and replication of DNA and exerting a bactericidal effect.

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.

Significantly inhibit ovulation and prevent fertilized eggs from implanting, and increase the consistency of cervical mucus and the resistance of sperm penetration, thus playing a quick-acting contraceptive role