To absorb calcium, you must get 400 IU of vitamin D a day from fortified foods and supplements. Because sunlight is required for the body to synthesize Vitamin D, people who live in northern areas may have deficiencies even if they get enough calcium. Milk is fortified with vitamin D to guard against this problem. Calcium Supplements Calcium is not a cure for osteoporosis, but it is essential for enhancing bone health in everyone, including people who already have the disease. There are several types of calcium supplements available.
Calcium carbonate is the most common form of calcium.
It is available as a pill, in chewable-tablet form, and as an ingredient in some antacids. Some women may have a little difficulty digesting it, complaining of constipation. Calcium carbonate is best consumed after meals so that the acid in your stomach can digest and absorb it. Calcium citrate may be more readily absorbed and should be taken on an empty stomach. Calcium citrate malate is a new supplement that seems to be easier on the stomach and better absorbed.