External use can shrink dermal capillaries, inhibit the proliferation or regeneration of epidermal cells, inhibit the regeneration of fibroblasts in connective tissue, stabilize intracellular lysosomal membranes, and prevent tissue damage caused by the release of lysosomal enzymes. It has strong anti-inflammatory and anti-allergic effects.

It has a broad-spectrum antimicrobial effect in vitro, including aerobic Gram-negative and Gram-positive bacteria, anaerobes, Rickettsia, spirochetes and Chlamydia. It has a bactericidal effect on influenza bacilli, Streptococcus pneumoniae and Neisseria meningitidis; it only has an antibacterial effect on anaerobic bacteria such as Staphylococcus aureus, Streptococcus pyogenes, Streptococcus viridans, group B hemolytic streptococci, 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 the bacterial ribosome, inhibiting the action of transpeptidase and preventing protein synthesis.

It has a strong antibacterial effect on most anaerobic bacteria, and the antibacterial spectrum includes Bacteroides fragilis and other Bacteroides, Fusobacterium, Clostridium perfringens, Eubacterium, Veillonella, Peptococcus and Peptostreptococcus, etc. It has a strong killing effect on amoeba and Trichomonas. The bactericidal mechanism has not been fully elucidated. It is reduced to a cytotoxin through nitro reduction, which acts on the DNA metabolism process of bacteria and promotes cell death.

Can reduce the adverse reactions of metronidazole.

This product acts on the nervous system of scabies, paralyzing them and causing their death. It also has a slight local anesthetic effect and can relieve itching.