Eggshell powder is a highly concentrated source of calcium, containing about 34,000−36,000 mg34 comma 000 minus 36 comma 000 mg34,000−36,000mg of calcium per 100 g100 g100g. It is low in calories (approx. 14 kcal14 kcal14kcal per 100 g100 g100g), contains roughly 2−7%2 minus 7 %2−7% protein, and minimal to no carbohydrates or fat, acting mainly as a calcium carbonate supplement.
