Calcium, iron and zinc are essential trace elements for human body, and when they are lacking, they will have corresponding symptoms. Calcium, iron and zinc are absorbed through the same channel and cannot be supplemented at the same time. Generally, zinc is supplemented in the morning, iron is supplemented at noon and calcium is supplemented at night.

The best time for baby to supplement zinc can be taken half an hour after breakfast. Zinc has certain irritation. If it is taken on an empty stomach, it will cause certain irritation to the gastrointestinal tract. Don't take it with milk.

Babies need vitamin D supplementation from/0/4 days after birth. Vitamin D can promote calcium absorption, and vitamin D supplementation can supplement calcium. Because the baby wants to drink milk, there is a lot of calcium in the milk. As long as there is enough milk to eat, calcium is enough. In fact, it is not calcium that is lacking, but vitamin D that promotes calcium absorption.

As for iron supplementation, according to the child's specific situation, if the child is pale, loses appetite, and has mental problems, such as irritability, inattention, and memory loss, some individual children's nails will also develop abnormally. These situations suggest that the child has the possibility of anemia, that is, iron deficiency. Blood tests and hemoglobin may be significantly reduced. At this time, iron supplementation is also needed. The most common way to supplement iron is to supplement iron through food, mainly by eating lean meat and egg yolk. As for zinc supplementation, it is also an important issue, because zinc is a very important trace element. Children with zinc deficiency may have a bad appetite and may be eccentric. For example, children like to eat things that should not be eaten, such as cinder and soil. Zinc deficiency can also cause children's growth and development to lag behind, not to grow up, and their cellular immune function is poor, and their mental development is retarded.

In view of this situation, for young children, breastfeeding is still advocated. Children who are exclusively breastfed don't need zinc supplementation in the first 4 months. After 4-6 months, when adding complementary food, they should pay attention to a balanced diet and eat more lean meat, animal liver, etc., which can play a good role in zinc supplementation. If zinc is supplemented by drugs, zinc can be supplemented by 0. 1-0.3mg per kg body weight, and if the symptoms are serious, zinc can be supplemented by 0.5- 1mg per kg body weight. If the child has diarrhea, it can also be supplemented with zinc.