It can be converted into retinal in the body and participate in the synthesis of the photosensitive substance - rhodopsin to maintain the dark adaptation process of vision and enhance the photosensitivity of the retina; at the same time, it can maintain the integrity and soundness of the epithelial tissue structure; and plays an important role in bone growth and gonadal development.

It can promote the absorption of calcium and phosphorus in the intestine, decalcify old bones, calcify new bones, and strengthen the reabsorption of calcium and phosphorus by renal tubular cells, thereby regulating serum calcium and phosphorus concentrations. It is especially important for the development of fetuses and infants, the integrity of epithelial tissues, vision, reproductive organs, the stability of blood calcium and phosphorus, and the growth and development of bones and teeth.

Warming the meridians and activating blood circulation, regulating qi and relieving pain

Warming the meridians and activating blood circulation, regulating qi and relieving pain

Warming the meridians and activating blood circulation, regulating qi and relieving pain

Vitamin D2 promotes the absorption of calcium by the brush border of the small intestinal mucosa and the reabsorption of phosphorus by the renal tubules, increases the concentration of blood calcium and phosphorus, cooperates with parathyroid hormone and calcitonin, promotes the release of calcium phosphate from old bones, and maintains and regulates the normal concentration of plasma calcium and phosphorus. Vitamin D2 promotes the deposition of calcium in new bone formation sites, deposits citrate in bones, promotes bone calcification and the maturation of osteoblast function and bone-like tissue. After vitamin D2 is ingested, it is catalyzed by the 25-hydroxylase system in the cell microsomes to produce calcidiol (25-OHD3), which is catalyzed by the 1-hydroxylase system of the renal proximal tubular cells to produce biologically active calcitriol [1-25-(OH)2D3].

Vitamin D2 promotes the absorption of calcium by the brush border of the small intestinal mucosa and the reabsorption of phosphorus by the renal tubules, increases the concentration of blood calcium and phosphorus, cooperates with parathyroid hormone and calcitonin, promotes the release of calcium phosphate from old bones, and maintains and regulates the normal concentration of plasma calcium and phosphorus. Vitamin D2 promotes the deposition of calcium in new bone formation sites, deposits citrate in bones, promotes bone calcification and the maturation of osteoblast function and bone-like tissue. After vitamin D2 is ingested, it is catalyzed by the 25-hydroxylase system in the cell microsomes to produce calcidiol (25-OHD3), which is catalyzed by the 1-hydroxylase system of the renal proximal tubular cells to produce biologically active calcitriol [1-25-(OH)2D3].

Participates in the formation of bones and the reconstruction of bone tissue after fracture, muscle contraction, nerve transmission, coagulation process and reduces the permeability of capillaries, etc.