Purchase Amoxicllin and Clavulanate an Augmentin Brand http://www.amoxicillin.org.uk/... An antibiotic drug (Amoxicllin) is to be used for the infectious treatment in urinary, skin and ear infections, sinusitis etc. Dosages are available in different mgs in the pharmacy. Patients may buy it for many infections like urinary, ear and skin, pneumonia infections.