Calcium (as D-calcium pantothenate, dicalcium phosphate) — answers to Calcium
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This is elemental calcium supplied incidentally through two compounds used mainly to deliver other nutrients: D-calcium pantothenate (a source of pantothenic acid) and dicalcium phosphate (a common calcium and phosphorus mineral salt used as a filler and nutrient source in supplements).
Why it’s used
Taken to contribute to overall calcium intake, which the body uses for bone and teeth structure, muscle function, and nerve signaling.
What the evidence is for
maintaining bone mineral density when overall intake is adequate.
What the evidence says
NIH ODS describes calcium as well established for maintaining bone density and reducing fracture risk when intake is adequate, particularly in combination with sufficient vitamin D. Evidence for benefit from calcium supplementation specifically, beyond meeting overall dietary needs, is more mixed, and some research has raised questions about cardiovascular effects at very high supplemental intakes.
Dose studied
1000–2500 mg — adult RDA up to the tolerable upper intake level, per NIH ODS.
Context
The adult RDA ranges from about 1,000 to 1,200 mg/day depending on age and sex, with a tolerable upper intake level of 2,000-2,500 mg/day, per NIH ODS. The amount contributed by a given supplement depends on the total formulation, not just these two ingredient sources.
Educational information, not medical or safety advice. Consult a professional for allergies or medical concerns.