To determine if a child has taken too much calcium, the following aspects can be assessed: First, look at the child’s clinical symptoms. Children who take too much calcium may experience constipation as well as abdominal distension, abdominal pain, and even vomiting, and children may also have a poor appetite and may even experience severe blood in the urine and other symptoms. Second, according to the laboratory test results. If the calcium level exceeds the high limit of the normal range, reduce the amount of calcium or stop the calcium supplementation. If a child is taking too much calcium, it can cause calcium deposits in the internal organs, causing calcification of blood vessels, etc.