Cidanamox - Pharmacological action Amoxicillin is an antibiotic of group semisynthetic penicillins a wide spectrum of action. It is a 4-hydroxyl analog of ampicillin. It has bactericidal action. amoxicillin is active against aerobic gram-positive bacteria: Staphylococcus spp. (except strains producing penicillinase), Streptococcus spp; aerobic gram-negative bacteria: Neisseria Gonorrhoeae, Neisseria Meningitidis, Escherichia Coli, Shigella spp., Salmonella spp., Klebsiella spp. Microorganisms...