Doc suggested it was a better medicine to Amlodipine which I have been on for several years. I have PAH, AF and enlarged heart, and do not produce enough O2. If my pulsometer reads above 92 I consider that a good day.
I have a O2 bottle in the house to keep my levels up when required.
Main medicine is Sildenafil, Furosemide and Lanoxin, all relatively small dosages.
The Furosemide is an extremely good med for getting rid of fluid but needs regular kidney checks. Also take Edoxaban.
Cardiologist says my lungs have been scarred due to a previous incident in my life which has myself baffled. Not a smoker etc...
In '91 I was doing the grand tour of Iraq and plenty of weird stuff in the air then.
Currently use a good private hospital and the heart centre are excellent.