Calcium supplements: When should they be taken?
WEBMay 20, 2023 · Take calcium carbonate with food. The acid the stomach makes while eating helps the body absorb calcium carbonate. Total daily dose. It's best to take calcium in smaller doses. Smaller doses most often means 500 milligrams or less at a time. To take 1,000 mg of calcium a day, split it into two or more doses over the day. Other medicines.