Amoxil is a penicillin antibiotic. It has antibacterial mechanism of action and can be applied for such infections as H. influenzae, N. gonorrhoea, E. coli, Pneumococci, Streptococci, and Staphylococci. It works by stopping the growth of bacteria. This antibiotic treats only bacterial infections. It will not work for viral infections (such as common cold, flu).