The best time to take calcium tablets for pregnant women should depend on the actual situation. If the calcium deficiency is not too serious, pregnant women can take calcium from their diet and do not need to take oral calcium tablets. If the calcium deficiency is more serious, you can follow the doctor’s advice to take oral calcium tablets. After pregnancy, with the gradual development of the fetus, some pregnant women may be deficient in calcium, if it is only a mild calcium deficiency, you can take from the diet, eat more calcium-containing foods, such as milk, shrimp, soy products, etc., and go out more in the sun, to promote the absorption of calcium in the body. If the calcium deficiency of pregnant women is more serious, in order to avoid affecting the development of the fetus, you can follow the doctor’s advice to take calcium tablets orally, therefore, when pregnant women take calcium tablets should be based on the actual situation, there is no clear time standard. When taking calcium tablets, pregnant women should not buy and take, should follow the doctor’s advice, take calcium tablets reasonably.