Calcium
Mineral
Building block of bones and teeth; supports muscle and nerve function.
Form: Tablet
Recommended intake: 1000–1200 mg/day
Benefits
Maintains bone mineral density, supports clotting cascade, muscle contraction, and nerve impulse transmission.
Warnings
High intake (>2500 mg/day) raises kidney-stone risk and may interfere with iron / zinc absorption.
Description
Calcium absorption depends on adequate vitamin D. Older adults and postmenopausal women often supplement to prevent osteoporosis. Carbonate is taken with food; citrate is absorbed without acid.