For individuals who are lactose intolerant or vegan, it can be difficult to maintain calcium levels. Calcium bicarbonate is many times more soluble in water than calcium carbonate—indeed it exists only in solution. At extremely low P CO 2, dissolved CO 2, bicarbonate ion, and carbonate ion largely evaporate from the solution, leaving a highly alkaline solution of calcium hydroxide, which is more soluble than CaCO 3.

Some studies have shown that high calcium intake from dairy products and supplements may increase risk, whereas another more recent study showed no increased risk of prostate cancer associated with total calcium, dietary calcium or supplemental calcium intakes.Using a fine grade of calcium powder, this supplement is ideal for easy digestion and absorption of the optimum calcium levels required. Two hydrated phases of calcium carbonate, monohydrocalcite CaCO 3·H 2O and ikaite CaCO 3·6H 2O, may precipitate from water at ambient conditions and persist as metastable phases. The effects of calcium supplementation to patients with primary hyperparathyroidism and a low calcium intake.

Magnesium carbonate ( MgCO 3) has the calcite structure, whereas strontium carbonate ( SrCO 3) and barium carbonate ( BaCO 3) adopt the aragonite structure, reflecting their larger ionic radii.

For vanishing acid concentrations, one can recover the final pH and the solubility of CaCO 3 in pure water. periodic replenishment of bicarbonate to maintain buffer capacity (often estimated through measurement of total alkalinity).