bacterial infection
"I had a fever of 103 which lasted 24 hours, then a bad cough set in that left my body achy. I, too, thought I was going to break a rib coughing - it was a deep cough. I had phlegm deep in my lungs that would not come out. Felt a little light headed. As soon as I took the first dose, my head started to feel clearer. I expect I will get better on this medicine and avoid getting walking pneumonia. I'm so grateful - this medicine has helped 'whatever is going around town' - cough/flu/pneumonia type symptoms. "