My father is a healthy 94 year old male who has started coughing continuously over the last 11 days, some clear sticky phlegm comes but not in excessive amounts. He has no fever. Two months ago the doctor that visited him gave him a prescription of 28 penicillin capsules, which he took over a 7 day period, within 1 week his coughing stopped. At the time he did not have any fever, nor have any other illness. does not. Except, the same type of cough has returned. Please give me some helpful advise. Peter the the cough has returned. upon completion of this