Vitamin D3, also known as cholesterol calcification, is often used to prevent and treat vitamin D deficiency. It is a fat-soluble vitamin and is also regarded as a hormone precursor that acts on calcium and phosphorus metabolism. It is closely related to sunlight, so it is also called sunshine vitamin.

Vitamin D3 is mainly synthesized by the human body itself. Cholesterol under human skin becomes vitamin D3 after being irradiated by sunlight. In addition, eating some fatty fish or some nutritionally fortified milk such as orange juice can also supplement the vitamin D3 needed by the human body.

Vitamin d3 can directly promote the absorption and utilization of calcium. Lack of vitamin D3 can lead to rickets, severe tooth decay, rickets and senile osteoporosis.