Calcium Citrate with Vitamin D Tablets

In research supported by the National Institute of Health, the theory as to why Calcium Citrate shows superior absorption to Calcium Carbonate is elucidated in an excerpt from the study:  Comparison of the absorption of calcium carbonate and calcium citrate after Roux-en-Y gastric bypass "Several studies have shown that the absorption of calcium carbonate is more dependent on gastric acid secretion than calcium citrate [31–36]. A previous study in healthy, postmenopausal women with varying degrees of gastric acid secretion reported a 2.5-fold higher intestinal calcium absorption following a single test load of calcium citrate than calcium carbonate [37]."  Published online 2009 May 13. doi: 10.1007/s11695-009-9850-6   The process of building and maintaining bone structure involves numerous biochemical and physiological processes. Osteoblasts and osteoclasts are the two primary types of bone cells involved in maintaining skeletal structure. Osteoblasts are responsible for bone mineraliz