Combination drug for intravaginal use, containing metronidazole and miconazole.
Metronidazole is an antiprotozoal and antimicrobial drug, a derivative of 5-nitroimidazole. The mechanism of action is the biochemical reduction of the 5-nitro group of metronidazole by intracellular transport proteins of anaerobic microorganisms and protozoa. The restored 5-nitro group of metronidazole interacts with the DNA of a cell of microorganisms, inhibiting the synthesis of their nucleic acids, which leads to the death of bacteria and protozoa.
Active in a relationship Trichomonas vaginalis, Entamoeba histolytica, Gardnerella vaginalis, Giardia lamblia, as well as obligate anaerobes Bacteroides spp. (incl. Bacteroides fragilis, Bacteroides distasonis, Bacteroides ovatus, Bacteroides thetaiotaomicron, Bacteroides vulgatus), Fusobacterium spp., Veillonella spp., Prevotella bivia, Prevotella buccae, Prevotella disiens) and some Gram-positive microorganisms (Eubacterium spp., Clostridium spp., Peptococcus spp., Peptostreptococcus spp.). The MIC for these strains is 0.125-6.25 μg / ml.
Metronidazole is insensitive to aerobic microorganisms and facultative anaerobes, but in the presence of mixed flora (aerobes and anaerobes) metronidazole acts synergistically with antibiotics effective against aerobes.
Miconazole is an effective antimycotic agent that exerts its effect primarily on dermatophytes and yeast fungi.
With intravaginal application active mainly in relation to Candida albicans. Miconazole inhibits the biosynthesis of ergosterol in fungi and changes the composition of other lipid components in the membrane, which leads to the death of fungal cells. Miconazole not changes the composition of normal microflora and pH of the vagina.