Hi My mother suffers from breathing difficulties on and off. Symptoms starts from dry cough and finally asthma like situation. Presently she taking lot of anti allergic and anti asthma medications. Sometime when these symptoms aggravate than she has to take Derrifiline Intramuscular injection. I am looking for permanent treatment or at least reduce either symptoms or medications which may damage her kidneys. She is about 45-55 kg Age -55 years.