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Metronidazole has a strong antibacterial effect on most anaerobic bacteria, but has no effect on aerobic bacteria and facultative anaerobes. The antibacterial spectrum includes Bacteroides fragilis and other Bacteroides, Fusobacterium, Clostridium perfringens, Eubacterium, Veillonella, Peptococcus and Peptostreptococcus. Actinomycetes, Lactobacillus and Propionibacterium are resistant to this product. Its bactericidal concentration is slightly higher than the inhibitory concentration. This product can also inhibit the redox reaction of amoeba and break the nitrogen chain of the protozoa. In vitro tests have shown that when the drug concentration is 1-2 mg/L, the histolytic amoeba can undergo morphological changes in 6-20 hours and all are killed within 24 hours. When the concentration is 0.2 mg/L, the histolytic amoeba can be killed within 72 hours. This product has a strong effect of killing trichomonas, and its mechanism is unknown. It has a carcinogenic effect on some animals.

1. It has a strong antibacterial effect on most anaerobic bacteria, but has no effect on aerobic bacteria and facultative anaerobic bacteria. The antibacterial spectrum includes Bacteroides fragilis and other Bacteroides, Fusobacterium, Clostridium perfringens, Eubacterium, Veillonella, Peptococcus and Peptostreptococcus, etc. Actinomycetes, Lactobacillus and Propionibacterium are resistant to this product. Its bactericidal concentration is slightly higher than the inhibitory concentration. 2. It can also inhibit the redox reaction of amoeba and break the nitrogen chain of the protozoa. In vitro tests have shown that when the drug concentration is 1-2 mg/L, the histolytica can change its morphology in 6-20 hours and all are killed within 24 hours. When the concentration is 0.2 mg/L, the histolytica can be killed within 72 hours. 3. It has a strong effect of killing trichomonas, and its mechanism is unknown. It has a carcinogenic effect on some animals.

This product has good antibacterial effect on superficial fungi such as Trichophyton, Microsporum, Epidermophyton, etc. It has no antibacterial effect on Candida, Cryptococcus, Histoplasma, Sporothrix, Blastomyces, Coccidioides, etc. This drug inhibits the growth of fungi by interfering with the synthesis of fungal nucleic acids.