Generic Amoxil Amoxicillin capsule Description Amoxicillin  is a penicillin antibiotic. It kills or stops the growth of some bacteria. This medicine is used to Treat many kinds of Infections. It will not work for colds, flu, or other viral infections. What should I tell my health care provider before I take this medicine? They need to know if you have any of these conditions: asthma kidney