Also known as Calcium citrate, Calcium carbonate
Caution. High doses may increase kidney stone risk in some; balance with vitamin D and K.
Calcium is the main mineral in bone and teeth and also participates in muscle contraction, nerve signaling, and blood clotting. Supplements are often used when dietary intake is low, particularly in older adults or those avoiding dairy. Form and timing matter, as very high single doses can be less well absorbed and may increase kidney stone risk in susceptible people.
Checked Jul 19, 2026.
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