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. Discover how the antibiotic Augmentin works, what bacterial infections it treats, and how to safely manage your prescribed dosage. 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 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. 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. 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. 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. Brand and Other Names: Augmentin, Augmentin XR, more. Augmentin ES-600. amoxicillin/clavulanate. β-lactamase−producing strains of Haemophilus influenzae and Moraxella catarrhalis. Mild to. AUGMENTIN is an oral antibacterial combination consisting of amoxicillin and the beta-lactamase inhibitor, clavulanate potassium (the potassium salt of clavulanic acid). Amoxicillin is an analog of ampicillin, derived from the basic penicillin nucleus, 6 aminopenicillanic acid. To reduce the development of drug‐resistant bacteria and maintain the effectiveness of AUGMENTIN and other antibacterial drugs, AUGMENTIN should be used only to treat or prevent infections that.