No extra calcium supplements are needed as long as your baby has a normal diet. As long as your baby’s diet is normal, he or she can consume enough calcium without additional supplements. Foods that you normally eat are rich in calcium. For example, babies can get calcium from breast milk, and infants can also get enough calcium from milk, soy products, vegetables, lean meat and other foods. The metabolism of calcium and phosphorus in the body requires a sufficient amount of vitamin D. Insufficient intake of vitamin D in food requires additional supplementation, and it is recommended that newborns take vitamin D orally as prescribed by the doctor from two weeks after birth to promote the metabolism of calcium and phosphorus. Usually let the baby balanced diet, more exercise, vitamin D supplementation, to promote growth and development. Generally, there is no need to take extra calcium supplements.