My 1 Year Old Daughter Has Been Coughing For Over

My 1 year old daughter has been coughing for over 2 months. I have taken her to two different pediatricians over the period. They say that she has allergies and prescribed aeroflux and ventirene. Last week the cough became chestier and heavy runny nose now included. When she falls asleep she is fine no runny nose no coughing. As soon as she opens her eyes.runny nose,coughing. Help