Calcium supplements can REDUCE the effectiveness of calcium channel blockers.

January 2005

  Calcium is needed for cardiac and vascular smooth muscles to contract. Calcium channel blocking drugs work by reducing the amount of calcium available to heart and vascular tissues.

  So some people are concerned that oral calcium supplements could possibly counteract the therapeutic benefits of calcium channel blockers. However, there is no data to support this theory.

  It is true that calcium is sometimes helpful in the management of calcium channel blocker overdose. And it has also been used to reduce the hypotensive effects of verapamil when used to treat arrhythmias.

Get concise advice on drug therapy, plus unlimited access to CE

Pharmacist's Letter membership benefits include:

  • 12 issues every year — what you need to know and do, right now
  • Quick, practical reference charts and tools
  • Comprehensive CE library to meet license renewal and state requirements
  • Multiple course formats including live webinars, podcasts, and CE-in-the-Letter to match your learning style
  • Plus much more!

Choose the right tier for your needs today.

Already a subscriber? Log in

Volume pricing available. Get a quote