Calcium supplements for 7 year old children can take calcium carbonate, calcium gluconate and so on as prescribed by the doctor, there is no such thing as the best calcium tablets. Children’s calcium supplement options are rich and varied, you can choose to calcium carbonate as a representative of the inorganic calcium, characterized by higher calcium content, but the absorption rate is relatively low compared to organic calcium, while the taste is not particularly popular with children, but still acceptable, the price is relatively low, but there will be differences between different brands. Calcium gluconate is also a good choice, its flavor is sweet and sour, some children prefer, at the same time belong to the organic calcium, absorption rate is relatively high. 7-year-old children need to combine calcium supplementation with vitamin D together, in order to promote the absorption of calcium, at the same time can not blindly supplement calcium, blind calcium supplementation may lead to constipation and other side effects, while hypercalcemia and other diseases should not supplement calcium. Calcium supplementation for children must be carried out under the guidance of a doctor.