Amoxicillin is a penicillin antibiotic used to treat bacterial infections such as tonsillitis, bronchitis, sinusitis, pneumonia, and infections of the ear, nose, throat, skin, or urinary tract. Amoxicillin is a type of penicillin antibiotic that treats bacterial infections. Common brand names include Amoxil®, Moxilin®, Sumox and Trimox. Amoxicillin is used to treat bacterial infections in many different parts of the body (ear, lungs, nose, sinus, skin, urinary tract). It is also used with other medicines (eg, clarithromycin, lansoprazole) to treat H. pylori infection and duodenal ulcers. Amoxicillin is in a class of medications called penicillin-like antibiotics. It works by stopping the growth of bacteria. Antibiotics such as amoxicillin will not work for colds, flu, and other viral infections. Taking antibiotics when they are not needed increases your risk of getting an infection later that resists antibiotic treatment. Learn about side effects, dosage, uses, and more for amoxicillin, a prescription drug that treats bacterial infections in adults and children. Find patient medical information for Amoxicillin (Amoxil and others) on WebMD including its uses, side effects and safety, interactions, pictures, warnings, and user ratings Detailed Amoxicillin dosage information for adults and children. Includes dosages for Urinary Tract Infection, Sinusitis, Bronchitis and more; plus renal, liver and dialysis adjustments. Amoxicillin (Amoxil) is a penicillin antibiotic that's used to treat a wide variety of bacterial infections, such as sinus infections, ear infections, strep throat, and urinary tract infections (UTIs). View amoxicillin information, including dose, uses, side-effects, renal impairment, pregnancy, breast feeding, important safety information and directions for administration. Amoxicillin is an antibiotic medication belonging to the aminopenicillin class of the penicillin family. The drug is used to treat and prevent bacterial infections [9] such as middle ear infection, strep throat, pneumonia, skin infections, odontogenic infections, and urinary tract infections. [9].