Calcium D3 carbonate is best taken about half an hour after a meal and is mainly used for the prevention and treatment of calcium deficiencies, such as osteoporosis, calcium supplementation for lactating women and the elderly, calcium deficiency in women during pregnancy, and bone dysplasia, etc. Now the more popular on the market is the calcium carbonate D3 tablets, which is originally a complex preparation, can supplement both calcium and vitamin D, so that the body can better absorb calcium. The absorption of calcium needs to be carried out in the front of the diet structure, it is best to strengthen the calcium supplement from the diet, such as high calcium content food milk, soybean production, vegetables, fish and shrimp, etc., to increase the amount of these food diet, so as to better play a calcium supplement, to promote the role of calcium absorption. In the premise of dietary structure adjustment, if there is osteoporosis in the elderly or women during pregnancy calcium deficiency, you can additionally add some calcium carbonate D3 calcium tablets as a supplement, the effect will be better.