I have been taking symbicort 200/6 now for 2 years and never had any problems. In February this year they put me on 160/4.5. At the time I didn't notice they had changed it but the only thing is I became ill, struggling to breath, chest pains, light headed, couldn't stop coughing. I asked for an asthma review to and the put me on 400/12 symbicort. I got better with in days. Then last week I forgot to put in a prescription so took the other symbicort 160/4.5 one, again I noticed I started to feel ill within half an hour of taking it, chest pain, struggling to breath. I took it again the next morning as I thought I must be having a little attack. It wasn't unti I went in my car where I have a just in case one, I noticed the one in the car was symbicort 200/6 one. So I took it and stopped taking the 160/4.5 one and again i started to feel better. The doctors are now telling me they are the same but I feel they are different as the 160/4.5 makes me I'll. Has anyone else had this issue... The doctors are saying its in my head but o know it's not. I have noticed they have stuck a sticker over the 160/4.5 one to pass it off as 200/6 one.