Amlodipine's Role in Kidney Function Management

Introduction to Amlodipine and Kidney Function

The American Society of Nephrology suggests that amlodipine does not improve impaired kidney function and is inferior to ACE inhibitors/ARBs for renoprotection in patients with chronic kidney disease, though it effectively controls blood pressure without significantly worsening renal function in most cases 1, 2, 3

The African-American Study of Kidney Disease demonstrated that ramipril (an ACE inhibitor) was superior to amlodipine for slowing the loss of kidney function and preventing kidney-related clinical events in African Americans with nondiabetic chronic kidney disease, despite virtually identical blood pressure control between the two groups 1, 2, 3
In diabetic nephropathy, two major trials (IDNT and RENAAL) showed that angiotensin receptor blockers were superior to amlodipine for preventing progressive loss of kidney function and reducing proteinuria in patients with type 2 diabetes and nephropathy 4

Amlodipine can be safely used as an add-on agent for blood pressure control in CKD patients already on ACE inhibitors or ARBs, as suggested by the British Journal of Pharmacology 5
The American College of Cardiology found that amlodipine combined with enalapril maintained stable renal function in adults with hypertension and nondiabetic nephropathies 6, 7

For patients with CKD and proteinuria, ACE inhibitors or ARBs should be first-line therapy, not amlodipine, as recommended by the American Society of Nephrology 1, 2, 3
Amlodipine is appropriate as second- or third-line therapy when blood pressure targets (<130/80 mmHg) are not achieved with ACE inhibitors/ARBs alone, according to Hypertension 8
In diabetic patients, calcium channel blockers like amlodipine were shown to reduce cardiovascular events compared to placebo but were inferior to ACE inhibitors for preventing ischemic cardiac events, as found by Hypertension 8

The ABCD study found that nitrendipine, a dihydropyridine like amlodipine, was inferior to lisinopril in reducing ischemic cardiac events in diabetics 9
The ALLHAT data showed no significant differences in end-stage renal failure between chlorthalidone, amlodipine, and lisinopril arms, with a less marked decline in creatinine slope and better preservation of estimated creatinine clearance in the amlodipine arm 10

In peritoneal dialysis patients, the use of calcium channel blockers was associated with decreased loss of residual kidney function, defined as urine volume greater than 200 mL/day 11
The American College of Cardiology found that amlodipine combined with enalapril maintained stable renal function in adults with hypertension and nondiabetic nephropathies, although this information is not directly cited, a similar study with amlodipine was mentioned with the ABCD study 9