I'm 57 years old male & have been suffering from copd for the last 5 years or so. My problem was so acute that I was compelled to take vrs. Everyday I take inhalers like'formoflow' at the bedtime &'levolin' very frequently whenever needed. Besides these inhalers I don't take any other medicine. But nowadays despite taking these inhalers regularly I still suffer from acute breathlessness whenever I try to walk a bit rapidly. Please advise me how i'll get relief from my problem.