Can Aerius cause trouble falling asleep in a child, or is it to blame for other medications?

Son 6 years for 5 days He delivered pulmicort2times a day plus berodual20 drops of aerius5 ml flegamax2 times a day,grip stop to the nose2 times a day and 1 time metmin since then he constantly urinates nothing hurts him and has a problem to fall asleep it takes him it3 hours. Another 5 days pulmicort and Berodual once a day. other drugs unchanged or after that Aerius may have a problem with sleeping?has to take 2 weeks