1, calcium is one of the most common elements in human body. The content of calcium in human body accounts for 1.5-2% of the total weight, of which bones and teeth account for about 99%. Body fluids and soft tissues accounted for 1%. It plays an important role in human metabolism, cell function, nervous system operation and protein hormone synthesis.

2. Trace elements such as calcium and magnesium can reduce heart rate and blood pressure, relax muscles and nerves, and then improve sleep quality. Researchers at Stanford University in the United States found that supplementing 400-500 mg of calcium (and the same amount of magnesium) before going to bed can make 76% of women fall asleep more easily and wake up more energetic.

Extended data:

side effect

1, burping, constipation.

2. Excessive use of calcium tablets can lead to hypercalcemia: milk alkali syndrome, characterized by hypercalcemia, alkalosis and renal insufficiency.

3. Generally, calcium supplementation can easily cause gastrointestinal discomfort and constipation.

4. Generally, vitamin D is added to calcium tablets, but taking too much vitamin D for a long time will cause hypercalcemia and hypercalcemia and cause kidney calculi.

5. Patients with lithiasis, especially those with kidney calculi's disease, should not take a lot of calcium tablets for a long time.

References:

Baidu encyclopedia-calcium tablets

References:

People's Network-Five ways to improve sleep quality by taking calcium tablets to help sleep before going to bed