My four years old daughter has nose and chest congestion (with thick phlegm and wheezing sound) every now and then for last few months which is not letting her sleep properly in the night. I have been nebulising her from time to time. I've also been treating her with antibiotics but unable to get her rid of the infection permanently. Too worried about her as it is adversely affecting her overall growth. Kindly suggest effective remedy. Shall be grateful. Regards.