metronidazole + tobramycin

Metronidazole + tobramycin is a combination of two antibiotics used together primarily for the treatment of severe infections where both anaerobic and aerobic bacteria are suspected or confirmed. Metronidazole is a nitroimidazole antibiotic effective against anaerobic bacteria and certain protozoa, acting by disrupting DNA synthesis in susceptible organisms. Tobramycin is an aminoglycoside antibiotic that inhibits bacterial protein synthesis by binding to the 30S ribosomal subunit, mainly targeting aerobic Gram-negative bacteria. This combination has been studied as adjunctive therapy in conditions such as severe ulcerative colitis and gynecologic or intra-abdominal infections, especially when mixed flora (aerobes and anaerobes) are involved[1][2][6]. The use of this combination aims to provide broad-spectrum coverage but should be guided by clinical judgment, local susceptibility patterns, and culture results.