This product belongs to the macrolide antibiotics. It has antibacterial activity against Staphylococcus (except methicillin-resistant strains), all groups of streptococci and Gram-positive bacilli. Neisseria, Haemophilus influenzae, Bordetella pertussis, etc. are also sensitive to this product. This product also has antibacterial effects on various anaerobic bacteria except Bacteroides fragilis and Fusobacterium. It also has inhibitory effects on Legionella, Campylobacter fetus, certain spirochetes, Mycoplasma pneumoniae, Rickettsia and Chlamydia. This product is an antibacterial agent, but it also has a bactericidal effect on certain bacteria at high concentrations. It can penetrate the bacterial cell membrane and reversibly bind to the 50S subunit of the bacterial ribosome near the donor site ("P" site), blocking the transfer RNA (t-RNA) from binding to the "P" site, and also blocking the self-acceptor site ("A" site) of the polypeptide chain.

It binds to the 50S subunit of the ribosome of sensitive microorganisms, inhibits RNA-dependent protein synthesis and exerts an antibacterial effect

It binds to the 50S subunit of the ribosome of sensitive microorganisms, inhibits RNA-dependent protein synthesis and exerts an antibacterial effect

It binds to the 50S subunit of the ribosome of sensitive microorganisms, inhibits RNA-dependent protein synthesis and exerts an antibacterial effect

It binds to the 50S subunit of the ribosome of sensitive microorganisms, inhibits RNA-dependent protein synthesis and exerts an antibacterial effect

It binds to the 50S subunit of the ribosome of sensitive microorganisms, inhibits RNA-dependent protein synthesis and exerts an antibacterial effect

It binds to the 50S subunit of the ribosome of sensitive microorganisms, inhibits RNA-dependent protein synthesis and exerts an antibacterial effect

It binds to the 50S subunit of the ribosome of sensitive microorganisms, inhibits RNA-dependent protein synthesis and exerts an antibacterial effect

It binds to the 50S subunit of the ribosome of sensitive microorganisms, inhibits RNA-dependent protein synthesis and exerts an antibacterial effect

This product is a macrolide antibiotic. Its mechanism of action is similar to that of erythromycin, and its antibacterial spectrum is also similar to that of erythromycin, but its antibacterial activity against most Gram-positive bacteria is slightly worse. Some erythromycin-resistant Staphylococcus aureus are still sensitive to kitasamycin. This product also has considerable activity against diphtheria, tetani, Neisseria gonorrhoeae, pertussis, Rickettsia and Chlamydia trachomatis.