I have three kids with allerhic rhinitis and when the attack occurs all of them get sick at the same time with fever, colds and coughs..I have already research about thier sickness but my concern is when I bring them to thier pediatrician she immediately gave an antibiotic and disudrin but I have read that antibiotic will only thicken the mucus and causes my kids to have difficulty in breathing...should I stop the antibiotic?
Antibiotics have no role in thickening or thinning mucus. It just kills / suppress bacteria causing infection. If your pediatrician feel that there is bacterial infection then your kids will need antibiotics. You can give them without worrying about mucus consistency. Apart from that if they are suffering from allergic rhinitis use anti-allergic spray for acute symptoms and maintenance if very frequent episodes. Best wishes