I was on symbicort 400/12, budesonide 200, montelukast and flixotide 125. Last week when I went to see the nurse practioner my inhalers were changed to budesonide 400, oxis and montelukast because apparently they are not allowed to prescribe flixotide any more.It shouldn't have caused any problems because the amount of steroid is the same. Within 3 days my PF had dropped from 450 to 400 and I started to get symptoms. Went back and flixotide was added back in and this puhed PF back up to 450. Has anyone else had this problem?