Several recent studies conducted at UT Southwestern Medical Center at Dallas indicate that one form is superior. One study reviewed outcomes of 15 separate trials comparing the two forms of calcium and found that calcium citrate was better absorbed by the body, whether taken on an empty stomach or with meals. Another study tested patients' blood for calcium concentration after taking supplements and found that calcium citrate resulted in higher concentrations of available calcium. The third study found that postmenopausal women who took calcium citrate didn't lose bone density, while women who took a placebo had a significant decrease in bone density in their spines. When choosing a calcium supplement, read the label.
Calcium citrate is more beneficial than calcium carbonate.
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