Liquid Calcium with Magnesium provides these two essential minerals combined with Vitamin D and Zinc in a balanced very absorbable great tasting formula. These are the primary nutrients required for supporting your child s healthy bone growth and development. Health Tip As your child grows and develops Calcium is the most abundant mineral found in their body (comprising 1.5 - 2% of total body weight) with 99% of the total Calcium being found in the bones and teeth.