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1.Vitamin AD3 is fish liver oil. D3 indicates that the ingredient is derived from animals. Vitamin AD3 is commonly used to prevent and treat vitamin A and D deficiency. 

2. Such as rickets, night blindness and children hand and foot tic. 

3. Improve the absorption of calcium and phosphorus by the body, so that the plasma calcium and phosphorus levels can reach the saturation level; 

4, promote growth and bone calcification, promote sound teeth 

5. Increased phosphorus absorption through intestinal wall and increased phosphorus reabsorption through renal tubules; 

6. Maintain the normal level of citrate in the blood; 

7. Prevent loss of amino acids through the kidneys.