The time for women to take calcium tablets orally needs to be decided according to the different varieties of calcium tablets, and at the same time according to the metabolism of bone calcium to decide, it is recommended that the following points: 1, meal or after meals orally: women supplement calcium tablets can choose to calcium carbonate or calcium chewable tablets of Vitamin D. These two types of calcium tablets tend to be in the gastric acid can be increased to promote the absorption of calcium, so this kind of calcium tablets are recommended to be in the meal or after meal orally. 2, at any time orally: Calcium citrate does not need stomach acid to promote calcium absorption, so calcium citrate can be taken orally at any time.3, before going to bed or after dinner: the metabolism of bone calcium is often the most vigorous at night, and the concentration of blood calcium is the lowest at night, so oral calcium tablets are recommended to be taken orally before going to bed or after dinner, which is often conducive to the replenishment of blood calcium, to avoid the loss of bone calcium.