I'm on xolair right now and for me it's not the miracle drug that everyone claims it will be I have seen absolutly no improvement since starting xolair 3 months ago and I'm on the max dose, both my asthma and allergies have been worse since starting it. With that said since I"m new here I don't know how severe your asthma is and just from you saying that you've stopped youre advair and the fact that you aren't in the hospital tells me that you might not have severe enough asthma to qualify for xolair. Xokair works by binding the IgE to prevent and allergic response so the first step to getting xolair would be to have an IgE drawn to see where you're at and if it's high enough and your doctor can somehow push xolair by the insurance which will take a while, the dosing is then based on your IgE and your weight, so you could only end up getting like 2 shots once a month or you could be on three shots every other week it just depends on your IgE.
About the advair since I'm new here i don't know what problems everyone was having with it, but you do have asthma and it sounds like even if it's mmild you need to be on a controller med, i changed from advair and supplemental flovent to foradil and Qvar and saw a slight improvement in my Fev-1 not much but I'll take what i can get right now. Qvar has smaller particles in it than the flovent has so it gets deeper into your small airways. That may be an option to look at as well.