Learn about side effects, dosage, uses, and more for amoxicillin, a prescription drug that treats bacterial infections in adults and children. 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. 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 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. 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 a prescription drug for short-term treatment of certain bacterial infections. Learn about side effects, interactions, warnings, dosage, and more. Amoxicillin is a type of penicillin antibiotic that treats bacterial infections. Common brand names include Amoxil®, Moxilin®, Sumox and Trimox. Find patient medical information for Amoxicillin (Amoxil and others) on WebMD including its uses, side effects and safety, interactions, pictures, warnings, and user ratings Amoxicillin and clavulanate combination is an antibiotic that belongs to the group of medicines known as penicillins and beta-lactamase inhibitors. It works by killing the bacteria and preventing their growth. However, this medicine will not work for colds, flu, or other virus infections. Amoxicillin is an antibiotic medication belonging to the aminopenicillin class of the penicillin family. The drug is used to treat bacterial infections [9] such as middle ear infection, strep throat, pneumonia, skin infections, odontogenic infections, and urinary tract infections. [9].