vancomycin + neomycin + MTT

This is a combination drug consisting of vancomycin, neomycin, and MTT. Vancomycin is a glycopeptide antibiotic that inhibits bacterial cell wall synthesis by binding to the D-alanyl-D-alanine terminus of cell wall precursor units, leading to bactericidal activity against Gram-positive bacteria. Neomycin is an aminoglycoside antibiotic that binds to the 30S ribosomal subunit, inhibiting protein synthesis and resulting in bactericidal effects primarily against Gram-negative bacteria but also some Gram-positive organisms. The combination of vancomycin and an aminoglycoside like neomycin can act synergistically against certain pathogens[4][3]. "MTT" in this context is ambiguous; it may refer to a chemical moiety or excipient (such as 2-mercapto-1-methylimidazole or another compound), but no standard pharmaceutical use for "vancomycin + neomycin + MTT" as a named product could be identified from available sources.