What it does: Calcium carbonate supports the formation and maintenance of healthy bones and teeth, assists in normal muscle contraction, enables nerve signaling, and plays a role in blood clotting.
How it is used: It is commonly taken to boost calcium intake for bone strength, healthy teeth, and to support periods of increased calcium need, such as during pregnancy, aging, or osteoporosis risk.
Natural sources and supplement forms: Naturally present in rocks like limestone and in marine shells, calcium carbonate is also found in small amounts in eggshells and some foods. In supplements, it appears as purified powders, tablets, and chewables.
Why it appears in supplement formulas: Its high elemental calcium content and relative affordability make calcium carbonate a practical and efficient option for supporting daily calcium requirements.
What to know before use: Calcium carbonate may cause constipation or digestive upset in some individuals, and those with kidney stones or impaired kidney function should seek medical advice before use.
Interesting Fact
Calcium Carbonate: A Key Mineral Found in Everyday Foods
Calcium carbonate is the main form of calcium found in rocks like limestone and in many foods such as leafy green vegetables and dairy products. It’s commonly used in supplements to support daily calcium intake because it provides a concentrated source of elemental calcium, which the body uses to maintain healthy bones, teeth, and normal muscle function.
