Waki-Gentamycin 10% is a bactericidal aminoglycoside antibiotic , its main activity is against G-ve bacteria such as: Klebsiella pneumoniae, Pseudomonas aeruginosa, E. Coil, Salmonella spp., Shigella spp., Pasteurella. It also acts against G+ve bacteria such as b hemolytic strept., Steph. & Corynebacterium. Its antimicrobal activ ity results from binding to (30) S ribosomal subunit, thus inhibiting bacteria protein syn thesis.