For more severe infections and infections of the respiratory tract, the dose should be one 875-mg tablet of AUGMENTIN every 12 hours or one 500-mg tablet of AUGMENTIN every 8 hours. Augmentin is a prescription antibiotic combining amoxicillin and clavulanate to treat bacterial infections like sinusitis, pneumonia, UTIs, and bronchitis. Amoxicillin 875 mg is a higher standard dose used for moderate infections. Learn what it treats, its common side effects, and when a lower dose makes more sense. Learn about Augmentin (amoxicillin / clavulanate) usage and dosing. Read the latest news and reviews about the drug as well as potential side effects and popular alternatives. Augmentin is an oral antibacterial combination consisting of amoxicillin and the beta-lactamase inhibitor, and clavulanate potassium. Learn about dosages, side effects, drug interactions, and warnings. Overview: Amoxicillin/clavulanate is an antibiotic that is used for infections caused by certain bacteria. Common side effects include diarrhea, nausea, vomiting, or a rash. Serious side effects. 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 and clavulanate potassium is a combination antibiotic used to treat bacterial infections like sinusitis, pneumonia, UTIs, ear, skin, and bronchial infections. Amoxicillin/clavulanic acid is a combination penicillin-type antibiotic used to treat a wide variety of bacterial infections. It works by stopping the growth of bacteria. This antibiotic treats only bacterial infections. It will not work for viral infections (such as common cold, flu). The typical adult dosage of Augmentin is 875 mg amoxicillin/125 mg clavulanic acid (one tablet) taken every 12 hours, with treatment lasting 3 to 14 days depending on the type of infection.