I am using Asthalin inhaler for asthma for over 30 years. Also using Seroflo 100 rotocap for the last 6-7 years. A friend says continuous use of these could be reason for the reduced urination problem I suffer from for the last 7-8 months and asks me to get doctor's opinion from this angle. He warns that overconfidence about good health in spite of the problem may lead to sudden kidney failure/death! Any opinion please?