It also helps to decrease pressure within the kidney. Well, guess what happens. There is pressure across there, as with any artery changing into a vein. Any increase in pressure there, a kidney working overtime, or a little filter working overtime, only serves to hasten scarring and deterioration. Lessening the pressure, not only in the blood vessels all over your body, but also specifically in the glomeruli, as the ace-inhibitor does, helps to decrease that protein, and hopefully does decrease the scarring and disease progression.
Lets talk about people who have microalbuminuria.
The answer to that is yes, a careful low dose. If you have normal pressure and are taking an ace-inhibitor, it should not drop your blood pressure significantly. But everyone should be tried on it, as generally speaking it is very well tolerated. Calcium channel blockers work obviously by blocking calcium channels in cells and blood vessels, to help with hypertension. Very effective group of drugs.