Just wanted to address the comment that came in from a mom who's daughter cries all the time since starting on Xopenex....
I'm sorry I didn't mention it sooner, but please call your doctor about this! Meds shouldn't change our kids' personalities!! Ask your doctor for a suitable substitute for rescue meds. Sometimes a different brand of albuterol or levalbuterol can make a difference - but definitely ask your practitioner.
I hope this helps! I know it's a simple response, but it's really the only answer!
I hope you're able to resolve this soon, and that your little girl is back to her happy little self in no time!