Calcium and Zinc Oral Liquid is a healthcare product, and it is not clear that the use of the drug will harm your child. Calcium and Zinc Oral Liquid is mainly a health product containing calcium and zinc, and the harm to children arising from normal use or overdose is not clear. It is generally suitable for people aged 4-17 years who need to supplement calcium and zinc, and should not be used by people under 3 years old. If there is hypocalcemia, hypozincemia and other conditions, try to go to the hospital, under the guidance of the doctor to use not recommended to consult the drug treatment. Normally, if the child can do a balanced diet, can be from the food intake of sufficient amount of nutrients, such as calcium, zinc, etc., do not need additional supplementation. If the child has hypocalcemia due to disease factors, malnutrition, etc., it is recommended to go to the hospital, under the guidance of the doctor to use regular drug treatment.