In TCM theory, calcium is the source of life; It is not only an important part of human bones and teeth, but also has an important influence on the reaction of cell functional enzymes and the secretion of endocrine gland hormones, which can strengthen bones and regulate physiological functions. If children lack calcium, it will lead to rickets and affect their intellectual development. If women lack calcium, they will have irregular menstruation, dysmenorrhea and sallow complexion. If the elderly lack calcium, it will lead to osteoporosis, and may also cause constipation and obesity. Because Kosili D calcium carbonate D3 chewable tablets contain vitamin D, which is the general name of all steroids that can show the biological activity of cholesterol (vitamin D3) and is a fat-soluble vitamin; Vitamin D affects the absorption and storage of calcium and phosphorus, and has the function of preventing and treating rickets. Vitamin D2 and vitamin D3 are closely related to human health. Friends who lack calcium may wish to choose Kathleen D calcium carbonate D3 chewable tablets, which is more beneficial to their health.