Tetracycline antibiotics. This product is a broad-spectrum antibacterial agent with bactericidal effects at high concentrations. Rickettsia, Mycoplasma, Chlamydia, atypical mycobacteria, and spirochetes are also sensitive to this product. This product is more effective against Gram-positive bacteria than Gram-negative bacteria, but Enterococcus is resistant to it. Others such as Actinomycetes, Bacillus anthracis, Listeria monocytogenes, Clostridium, Nocardia, Vibrio, Brucella, Campylobacter, and Yersinia are sensitive to this product. This product has certain antibacterial activity against Neisseria gonorrhoeae, but penicillin-resistant Neisseria gonorrhoeae is also resistant to doxycycline. Due to the widespread use of tetracyclines over the years, common clinical pathogens have serious resistance to this product, including Gram-positive bacteria such as Staphylococcus and most Gram-negative bacilli. There may be cross-resistance between this product and different varieties of tetracycline antibiotics.

Tetracycline antibiotics are broad-spectrum antibacterial agents with bactericidal effects at high concentrations. They are sensitive to Rickettsia, Mycoplasma, Chlamydia, atypical mycobacteria, and spirochetes; they are more effective against Gram-positive bacteria than Gram-negative bacteria, but Enterococci are resistant to them; Actinomycetes, Bacillus anthracis, Listeria monocytogenes, Clostridium, Nocardia, Vibrio, Brucella, Campylobacter, and Yersinia are sensitive to them; they have certain antibacterial activity against Neisseria gonorrhoeae, but penicillin-resistant Neisseria gonorrhoeae are resistant to them; due to the widespread use of tetracyclines, Gram-positive bacteria such as Staphylococcus and most Gram-negative bacilli are seriously resistant to them.

Quinolone antibacterial drugs inhibit bacterial DNA helicase and have a broad-spectrum antibacterial effect. They have strong antibacterial activity against Enterobacter bacteria such as Escherichia coli, Klebsiella, Proteus, Shigella, Salmonella typhi, etc., as well as influenza bacillus and Neisseria. They also have certain antibacterial effects on Staphylococcus aureus and Pseudomonas aeruginosa. They have only mild effects on pneumococci, various groups of streptococci and enterococci.

Adrenal cortex hormones have anti-inflammatory, anti-allergic, anti-rheumatic and immunosuppressive effects. 1. Anti-inflammatory effect: This product can reduce and prevent tissue response to inflammation, thereby reducing the manifestations of inflammation. Hormones inhibit the accumulation of inflammatory cells, including macrophages and leukocytes at the site of inflammation, and inhibit phagocytosis, the release of lysosomal enzymes, and the synthesis and release of inflammatory chemical mediators. 2. Immunosuppressive effect: including preventing or inhibiting cell-mediated immune responses, delayed allergic reactions, reducing the number of T lymphocytes, monocytes, and eosinophils, reducing the ability of immunoglobulins to bind to cell surface receptors, and inhibiting the synthesis and release of interleukins, thereby reducing the secretion of T lymphocytes to lymphoblasts.

Adrenal cortex hormone drugs. It has anti-inflammatory, anti-allergic, anti-rheumatic and immunosuppressive effects. Its mechanism of action is: 1. Anti-inflammatory effect: reduce and prevent tissue response to inflammation, inhibit inflammatory cell aggregation, phagocytosis, lysosomal enzyme release and the synthesis and release of inflammatory chemical mediators. 2. Immunosuppressive effect: prevent or inhibit cell-mediated immune response, reduce the number of T lymphocytes, monocytes, and eosinophils, reduce the ability of immunoglobulins to bind to cell surface receptors and inhibit interleukin synthesis and release.