i have been on advair since 02.11.03 and each time i take it i experience dizziness and lightheadedness to the point that i am on the verge of blacking out and need to support myself with something stationary to avoid fainting. when my mental faculties and eyesight are regained i do not remember what i was just doing. i did report this to my health care provider and she said that she had never heard of anyone experiencing such side effects.