If a 1 year old baby is deficient in calcium it is best to supplement with compound calcium carbonate effervescent granules, this calcium is easily absorbed and the absorption rate can reach about 34%, the absorption rate of calcium gluconate is only 10%. If the baby is really deficient in calcium, calcium supplementation alone will not yield good results, and vitamin D supplementation should be increased at the same time, because vitamin D deficiency is what causes the baby’s calcium to drop. It turns out that you should take 600-700 IU of vitamin D every day, that is, 1 capsule of Iconocin. When calcium deficiency to supplement the amount of vitamin D should be increased to 2000 IU, you can take 1 capsule for babies over 1 year old Icocin, each capsule contains 700 IU vitamin D, plus 3 capsules of vitamin D3, each capsule contains 400 IU vitamin D, adding up to 1900 IU vitamin D, which is about right. Take 1 month of calcium supplementation at the same time, and return to the preventive dose of vitamin D. 1 capsule of Icocin for babies over 1 year of age per day will do.