Calcium citrate generally refers to calcium citrate, calcium carbonate and calcium citrate does not exist which is more suitable for pregnant women this statement, due to different personal circumstances, the drug does not exist more suitable for this statement, need to be combined with their own situation, ask the doctor’s guidance. Calcium carbonate is a kind of calcium supplement medication, which can prevent and treat calcium deficiencies, such as osteoporosis and tetany, as well as for calcium supplementation for pregnant and lactating women. Adverse reactions such as constipation and hypercalcemia may occur during administration. Calcium citrate also belongs to a kind of calcium supplementation drugs, its mechanism of action is similar to that of calcium carbonate, constipation and other adverse reactions are occasionally seen. Pregnant women need to take into account their own situation, as well as personal needs, ask the doctor’s guidance, do not take medication without authorization, in order to avoid damage to health. In daily life, ensure sufficient rest time and do not overwork. At the same time, you need to eat a balanced diet with more fresh fruits and vegetables.