What is the best approach for a patient with worsening renal insufficiency and intolerance of ACE inhibitors or angiotensin receptor blockers (ARBs)? —Ann Marchetta, MS, ARNP-C, FNP, Waupaca, Wis.

Calcium channel blockers are a common cause of poisoning and are associated with high mortality in affected patients.

A systematic review evaluated the efficacy of calcium channel blockers or alpha blockers for the treatment of urinary stones in nine randomized trials with 693 patients (Lancet. 2006;368:1171-1179).

I have found that some patients with depression seem to improve when calcium blockers are discontinued. Are there any data to support this? What would be your preference as a replacement for a calcium ...

Calcium channel blocker toxicity represents a significant clinical challenge owing to its multifaceted pathophysiology and potential to precipitate life‐threatening cardiovascular compromise. Overdose ...

Blocking calcium channels in brain capillaries may enhance blood flow and alleviate early-stage Alzheimer's damage, new study suggests. Study: Inhibiting Ca 2+ channels in Alzheimer’s disease model ...