Thanks a lot for all the replies! I am not seeking for medical advise but for personal experience and I got plenty! No need to tell me to go to see a doctor, I'm already dealing with it!

Slaphead, the doctor gave me a solution to breath (don't remember the name) and this product will provoked a reaction on the lungs if the person is asthmatic. You have many level of the provocation test and it can reach as much of 7000 mg to get to see a reaction. Some people will take many times this solution to see a reaction on the lungs.

In my case, the doctor gave me 70 mg, and I got a strong reaction right away. I lost 1 liter of capacity of my lungs. He told me he never saw such a strong and fast reaction before. It might explained why I got Seretide 500 ...