Gentamicin has a broad spectrum of antimicrobic effects and high efficiency against Staphylococcus strains resistant to penicillin and other types of antibiotics; some Streptococcus strains of the most gram-positive and gram-negative bacteria (blue pus bacillus, Klebsiella, Enterobacter, Salmonella, Shigella, Proteus). Antibiotic does not affect anaerobic bacteria, viruses and fungus.
The drug has a high bioavailability effect. During intramuscular injection it is rapidly penetrates through many organs and tissues. Maximum concentration in blood is reached approximately 30-60 minutes after injection. Therapeutic effect of this antibiotic in the body lasts for 8-12 hours after single injection. It is excreted mainly by kidneys generating high concentration in urine.