The time to take calcium tablets after menstruation is not standardized, the effect will be slightly better if taken before bed or one hour after meal, which can promote calcium absorption. Postmenopausal women are prone to calcium loss, postmenopausal women can consider taking calcium supplements before going to bed at night, because at this time the body’s blood calcium level is low, which can promote calcium absorption. It can also be taken one hour after meal, when the stomach acid level is higher, which can accelerate the digestion and absorption of calcium. Postmenopausal women eat calcium tablets at the same time, pay attention to more sunshine, supplement vitamin D, exercise, so as to promote calcium absorption. In supplemental calcium at the same time, usually in the diet to eat more dairy products, such as milk, yogurt, etc., these foods in the calcium content is relatively high.