Augmentin for ear infection. The Friday before Easter DD was to the walk in clinic with her first ever ear infection. Amoxycillin for 10 days, everything seemed fine. 5 days after finishing antibiotics, we are back to the walk in clinic with another ear infection. Dr presrcibes Augmentin for 7 days. He warns that it is a nasty antibiotic, and suggests we feed it with yogurt (probiotics) to help with the GI system.