Math science symptoms and conditions

Wow to the 10 year old story above. I'm on here because my 10 year old started Advair back in Sept for a nagging nighttime cough, asthma associated. Then his grades started to tank. He has aced his SOL's in math/science, but, this year has a D in Math! Today when we met with his teacher and found out he had been 'daydreaming' and seemingly 'asleep' in class, thanks teach for letting us know before now, we finally put it together, the new med. So, he has complained about being tired and having some sleepless nights. We put our kids to bed at 8:30pm and we don't run them to death with sports, etc. We couldn't figure it out. But, I can tell you, beginning tonight, no more Advair for him. We'll see by next week if this was the problem. Scary that this isn't rated as a 'side effect' of the med.