rn Please consult your physician before taking any medication. Generic name: Amoxicillin Brand names: Trimox, Amoxil Why is Amoxil prescribed? Amoxil, an antibiotic, is used to treat a wide variety of infections, including: gonorrhea, middle ear infections, skin infections, upper and lower respiratory tract infections, and infections of the genital and urinary tract. In combination with other drugs, it is also used to treat duodenal ulcers caused by H. pylori bacteria (ulcers in the wall of the small intestine near the exit from the stomach). Amoxil may also be used for other purposes not listed in this medication guide.