Calcium, magnesium and zinc deficiencies are common in clinical practice and are usually seen in babies from six months to one year of age after weaning, due to nutritional deficiencies. Calcium, magnesium, and zinc deficiencies between the ages of six months and one year generally require about 5 ml per day. 1-3 year olds may require roughly double the dose or even more. Older babies 4-8 years old may need three times the amount. As the age increases, the more nutrients the child needs. If the mother has no quality and is eating less to meet the nutritional needs of her child, then supplementation should begin at an early age. However, any nutritional supplements need to be used under the guidance of a doctor, especially a pediatrician, to understand the method of supplementation and how to take it before it is too late, so that the child’s brain, intelligence and bones develop better.