Yesterday i went for my 3rd xolair injection. A few minutes after i felt very dizzy, then hot, itchy, my face swelled and became wheezy. Was admitted to ward and had adrenaline, steriods, piriton and magnesium. Since starting xolair my asthma has become worse but have also had chest infections so thought that the cause. My consultant visited me later and said could not possibly be allergic to xolair as it prevents allergic reactions. All my allergies should have gone and shouldnt still be suffering from hayfever.Is there anybody else who has had problems with xolair? I had been waiting so long to have this drug and been told how good it is. So i just dont know why it not working for me.