It is okay to take calcium tablets before going to bed. Taking calcium tablets before going to bed to supplement calcium is beneficial to calcium absorption. However, if taken together with vitamins, it is recommended to take them separately. Taking them together with vitamins may affect the absorption of calcium, and long-term use of vitamins is not recommended.

Calcium supplementation should be as much calcium-rich foods as possible from natural foods. Food is the best medicine and has no side effects, so it is safer. Secondly, if the food you eat cannot meet your body's needs, you can use nutritional supplements, which are as many natural foods as possible. Generally speaking, 30 minutes to 1 hour after a meal is best.

The so-called "calcium supplement at night is effective" is because the human body is constantly clearing old bone tissue. This process is about 3 o'clock in the morning. People are fastest when they sleep.

Therefore, in order to ensure that the body's calcium index is more stable, it is appropriate to supplement calcium sources at night. However, this does not mean that you need to supplement calcium before going to bed, but you should not sleep for a period of time, preferably 4-5 hours before going to bed.

Be careful not to eat dinner too late. If you always eat at 90 o'clock in the evening, or add calcium after meals, and go to bed soon, it will not only cause gastrointestinal diseases, but also easily lead to urinary tract stones in the long run.

This is because apart from part of the calcium in the dinner food being absorbed and utilized by the small intestine, the other part will enter the urinary tract and be excreted from the body. The peak excretion of calcium is usually 4-5 hours after a meal.

If you eat dinner too late, when the peak of calcium comes, people will have fallen asleep, so that urine will remain in the urinary tract and deposit into small crystals. Over time, it can gradually expand into urinary tract stones.

Taking calcium tablets before going to bed is not harmful to the body, but be careful to take them separately from vitamins.