I am looking for the physiological effect of certain drugs. I have an appointment with my doctor on Monday regarding reduction of my medications. We are going to review all the meds I take. Several years ago ( 10?), my nephrologist had diagnosed me as having membranous glomerulonephritis. My blood pressure has been under control until the last year or so. Low BP, cold, etc. I want to be able to ask questions about the drugs and how they work. For example, Terazosin causes blood vessels to relax, etc. Then my doctor and I will begin, hopefully, to eliminate or at least reduce dosages.