Amoxicillin is an antibiotic called penicillin. Clarithromycin is an antibiotic made from macrolides. In the body, these antibiotics combat bacteria.
Amoxicillin, clarithromycin, and omeprazole are combination drugs used to treat stomach ulcers caused by Helicobacter pylori infection (H. pylori).
For reasons not specified in this drug guide, amoxicillin, clarithromycin, and omeprazole can also be used