I've been takig Advair 250x2 for about a year now and until I found this website I thought I was losing my mind. Side effects include thrush (and I rinse with half peroxide and half water, brush teeth, and then rinse with Listerine after i use the advair), leg cramps, dizziness, "lung pain", weight gain, post nasal drip, sleeplessness.....I have an apointment with my Doctor tomorrow, I think I'll suggest that he take me off advair and put me on something else!