Forms of Calcium
Each form is a distinct chemical with its own identity, elemental content and specification. Select one for its full datasheet.
Calcium Carbonate
Calcium carbonate
- CAS
- 471-34-1
- Formula
- CaCO3
- Elemental
- ~40% Ca
- Vegan
- Gluten-free
- Non-GMO
Calcium Citrate
Tricalcium dicitrate
- CAS
- 813-94-5
- Formula
- C12H10Ca3O14
- Elemental
- ~24% Ca (anhydrous; ~21% as tetrahydrate)
- Vegan
- Gluten-free
- Non-GMO
Calcium Citrate Malate
Calcium citrate malate (CCM)
- CAS
- 142606-53-9
- Elemental
- ~24% Ca (variable ratio)
- Vegan
- Gluten-free
- Non-GMO
Calcium Gluconate
Calcium D-gluconate
- CAS
- 299-28-5
- Formula
- C12H22CaO14
- Elemental
- ~9% Ca
- Vegan
- Gluten-free
- Non-GMO
Calcium Lactate
Calcium 2-hydroxypropanoate
- CAS
- 814-80-2
- Formula
- C6H10CaO6
- Elemental
- ~18% Ca (anhydrous; ~13% as pentahydrate)
- Vegan
- Gluten-free
- Non-GMO
Calcium Ascorbate
Calcium L-ascorbate
- CAS
- 5743-27-1
- Formula
- C12H14CaO12
- Elemental
- ~10% Ca
- Vegan
- Gluten-free
- Non-GMO
Calcium Bisglycinate
Calcium bis(glycinate)
- CAS
- 35947-07-0
- Formula
- C4H8CaN2O4
- Elemental
- ~21% Ca
- Vegan
- Gluten-free
- Non-GMO
Tricalcium Phosphate
Tricalcium bis(phosphate)
- CAS
- 7758-87-4
- Formula
- Ca3(PO4)2
- Elemental
- ~39% Ca
- Vegan
- Gluten-free
- Non-GMO
Microcrystalline Hydroxyapatite (MCHC)
Hydroxyapatite (pentacalcium hydroxide tris(phosphate))
- CAS
- 1306-06-5
- Formula
- Ca5(PO4)3(OH)
- Elemental
- ~40% Ca (mineral phase; lower in whole-bone ingredient)
- Gluten-free
- Non-GMO
Marine Algae Calcium (Aquamin)
Calcium carbonate (calcified red algae, Lithothamnion)
- CAS
- 471-34-1
- Formula
- CaCO3
- Elemental
- ~32% Ca
- Vegan
- Gluten-free
- Non-GMO
Calcium Lactate Gluconate
Calcium lactate gluconate
- CAS
- 11116-97-5
- Formula
- C42H78Ca5O48
- Elemental
- ~13% Ca
- Vegan
- Gluten-free
- Non-GMO