Calcium Carbonate｜HerbBB ingredient encyclopedia

Why supplement?

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High elemental calcium, acid-dependent

Calcium carbonate is about 40% elemental calcium. It is inexpensive but needs stomach acid, so take it with meals. Absorption is poorer with antacids or after gastrectomy. The use is raising calcium intake to support bone.

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Bone mineralization

Calcium carbonate is a source of calcium. Calcium makes up hydroxyapatite and is absorbed with vitamin D. This salt supplies elemental calcium; after adulthood, calcium alone cannot reverse an established osteoporotic image.

How to take it

With foodCalcium carbonate with a meal (not on an empty stomach); calcium citrate may be taken on an empty stomach or with food

Best timeSplitting the dose between morning and evening is usually easier to absorb

Check the elemental calcium on the label first.

General wellnessAdults 19–50: 1,000 mg elemental calcium/day; women 51 and older and all adults 71 and older: 1,200 mg/day

Specific needsTreatment doses for osteoporosis or deficiency must be set by a doctor based on diet, vitamin D, and bone testing. The usual adult upper limit for total intake is 2,000–2,500 mg/day.

How oftenPrefer food first and make up any gap from the product label; the usual adult total upper limit is 2,500–2,000 mg/day, depending on age.

What to watch

Cautions

Different forms cannot be swapped by name alone. Dose by elemental amount or vitamin equivalents, not by salt weight.

People with kidney stones, high blood calcium, kidney disease, or parathyroid disease should ask a doctor first.

Take calcium supplements apart from iron, levothyroxine, and some antibiotics.

Common side effects

· Constipation

· Stomach discomfort

Rare but important

· Long-term excess may raise the risk of high blood calcium or kidney stones.

Long-term dependenceNot addictive; long-term excess may cause mineral imbalance or kidney stones.