Introduction and therapeutic indications: Augmentin is an antibiotic agent with a notably broad spectrum of activity against the commonly occurring bacterial pathogens. Augmentin 625 Duo Tablet is a penicillin-type of antibiotic that helps your body fight infections caused by bacteria. It is used to treat infections of the lungs (e.g., pneumonia), urinary tract, skin, soft tissue ear and nasal sinus. It does not work for viral infections such as the common cold. The beta-lactamase inhibitory action of clavulanate extends the spectrum of amoxycillin to embrace a wider range of organisms, including many resistant to other beta-lactam antibiotics.