Lisinopril is an Angiotensin Converting Enzyme Inhibitor (ACE-I) and does cause some decrease in the blood flow to the kidney filters (glomeruli). Hence, Lisinopril may cause a slight increase in the serum creatinine. However, studies have shown that ACE-I can slow the progression of kidney disease over time and thus are indicated in many kidney diseases.
Carvedilol is a beta and alpha blocker. It may lower blood pressure and is often used in diabetes and heart disease. Carvedilol does not have any negative effects on the kidney.
As long as blood pressure is well controlled, most blood pressure medications should be helpful rather than harmful to patients with chronic kidney disease (CKD).