About Calcium
Essential mineral for bones and teeth. Category: Minerals, Subcategory: Macro Mineral. Default unit: mg. Notes: Compared as elemental calcium
Key Information
Compare All Forms
Compare different forms of Calcium by bioavailability, conversion rates, and active ingredient content:
| Form | Tier | Steps |
Elemental Calcium (mg) |
Bioavailability | Action |
|---|---|---|---|---|---|
|
Calcium Citrate
Calcium citrate is a synthetic calcium salt supplement suppo... |
Tier 3 | 3 |
16.0%
(400mg = 64mg) |
Basic/low bioavailability form. Cheap raw material with poor absorption or high GI distress. Often poorly utilized by the body, requires 3+ conversion steps. | View → |
Scientific Evidence
Numerous studies support the role of calcium in bone health and muscle function. Research compares the bioavailability of different calcium forms, including calcium citrate and calcium carbonate, particularly in relation to gastric acidity. Guidelines from organizations like the National Osteoporosis Foundation and the Institute of Medicine provide recommendations for calcium intake.