Hi Joe
Thanks a lot for the prompt response.
My mother does not have "an attack" as such from nowhere. I have noticed such a concept called "attack" in some of my friends and relatives. But in the case of my mother, she has never got an attack from nowhere. She invariably starts panting if she gets up and walks a few steps, or lifts some small not-so-heavy thing and displaces it. Or when she bathes etc. Basically any physical activity.
Another thing was, she had gone to the US for 3 months last year. However, there her problem subsided a lot despite not having the medication she carried with her. She was able to walk for long distances. Something that seemed miraculous. The only problem she had was in climbing stairs. All this made us also believe that her problem was more because of the pollution that exists in India :-(.

Thanks once again for listening and explaining patiently Joe. I am going to give her this treatment for sure, within a few days. And will get back to you on the result.

Thanks
Mahesh