Vitamin D plays a very important role in calcium and phosphorus metabolism, and vitamin D supplementation can increase the absorption of calcium in the gastrointestinal tract afterwards, which equals more absorption of calcium. Nowadays, osteoporosis is more frequent, especially in women after menopause, which requires supplementation of calcium tablets, i.e. vitamin D, as follows: 1. Vitamin D supplementation, such as Alpha D3, can be 0.25μg/time, 3 times/day; 2. Osteotriol can be 0.25mg/time, 2 times/day, this medicine can be supplemented, mainly with vitamin D; 3. Vitamin D supplementation alone will The body can promote the absorption of calcium in food, but if the calcium in food is less to eat calcium tablets, a variety of calcium carbonate preparations containing calcium, after eating the supplement is calcium, plus vitamin D, it can be absorbed; 4, the body in the sun exposure, the subcutaneous cholesterol into vitamin D. So if you can shine a certain amount of time every day, there is no lack of vitamin D, sunlight is also equivalent to supplemental vitamin D.