Augmentin (amoxicillin/clavulanate) is a prescription antibiotic that combines amoxicillin with clavulanic acid to fight bacterial infections that resist standard penicillin treatment. It treats sinusitis, ear infections, pneumonia, UTIs, bronchitis, and skin infections. Augmentin is a widely prescribed antibiotic that combines amoxicillin with clavulanate potassium. This combination helps fight bacteria that are resistant to amoxicillin alone. Augmentin XR is a high-dose, slow-release version of the drug used specifically for sinus infections or community-acquired pneumonia in adults and children who weigh at least 88 lbs (40 kg) and. Amoxicillin/clavulanic acid, also known as co-amoxiclav or amox-clav, sold under the brand names Augmentin, and Ranclav among others, is an antibiotic medication used for the treatment of a number of bacterial infections. [5] 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. Augmentin is prescription antibiotic used to treat many different infections caused by bacteria, such as sinusitis, pneumonia, ear infections, bronchitis, urinary tract infections, and infections of the skin. 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. Detailed dosage guidelines and administration information for Augmentin (amoxicillin and clavulanate potassium). Includes dose adjustments, warnings and precautions. Discover how the antibiotic Augmentin works, what bacterial infections it treats, and how to safely manage your prescribed dosage. 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.