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] Augmentin is a prescription antibiotic combining amoxicillin and clavulanate to treat bacterial infections like sinusitis, pneumonia, UTIs, and bronchitis. Description Amoxicillin and clavulanate combination is used to treat bacterial infections in many different parts of the body (eg, ear, lungs, sinus, skin, urinary tract). 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. Augmentin is a brand-name prescription antibiotic that’s used to treat different types of bacterial infections, including bacterial pneumonia, urinary tract infections, sinus infections, and others. Augmentin is a combination antibiotic prescribed to treat various bacterial infections in adults and certain children. It comes in several forms, including liquid suspensions, standard tablets. Augmentin is a widely prescribed antibiotic that combines amoxicillin with clavulanate potassium. This combination helps fight bacteria that are resistant to amoxicillin alone. Doctors often recommend Augmentin to treat infections like sinusitis, pneumonia, ear infections, urinary tract infections, and skin infections. Augmentin treats bacterial infections. Learn exact dosage for adults & children, side effects ranked by severity, and drug interactions. Updated 2026. Augmentin (amoxicillin / clavulanate) is an antibiotic medication. It contains a penicillin and a beta-lactamase inhibitor. This antibiotic treats many types of bacterial infections, like urinary tract infection (UTI), sinus infection, and ear infection, among others. It fights infections by preventing bacteria from protecting themselves from harm. This medication comes as tablets, chewable. Detailed dosage guidelines and administration information for Augmentin (amoxicillin and clavulanate potassium). Includes dose adjustments, warnings and precautions. Find patient medical information for Amoxicillin/Clavulanate (Augmentin, Augmentin XR, and others) on WebMD including its uses, side effects and safety, interactions.