Site offers a strong rebuttal to the health and safety claims made by purveyors of coral calcium. Includes references.

Exchange between bone calcium and blood serum calcium, effect of estrogen, chelates, nonchelates, acid/alkaline balance, and a successful clinical study.

Full prescribing information from RxList.

Ohio State University Extension fact sheet providing basic information and guidelines.

Full prescribing information from RxList.

Overview of calcium including its functions, food sources, and effects on the human body.

Information regarding the role of dietary calcium and exercise to maintain healthy bones written by registered dietitians.

Online calcium resource from the makers of Tums.

Information on this company's calcium supplements.

Dr. Donnica Moore discusses carbonated water and caffeinated beverages' effects on calcium levels in this question and answer format.

An article that disputes advertisers' claims about the so-called benefits of this supplement.

An article that gives reasons for the dismissal of hype and marketers' claims that this supplement is a cure-all.

Article about the nutritional requirements and dietary sources for this mineral.

Offers information about calcium and its deficiency. Includes the cell salts and other conditions.

Home of the calcium-binding protein database. Structure determination of calcium-binding proteins and nucleic acid fragments in solution by nuclear magnetic resonance.

A guide for the use of calcium supplements written by a Registered Dietitian.

A complete reference on calcium for the general public.

A current research briefing, including a list of popular research topics.