There is no such thing as “how many months is the best time to take calcium supplements for newborns”. Newborns generally do not need routine calcium supplementation, but if there is vitamin D deficiency caused by rickets, etc., you can take calcium supplements under the guidance of a doctor.
Before the age of half a year old baby, including newborns, the daily calcium needs of about 200-250mg, breast milk and formula milk calcium content can usually meet the baby’s demand for calcium, in principle, do not need additional calcium supplementation. After the baby is half a year old, begin to gradually add complementary foods, to ensure that the nutrition is comprehensive and balanced, generally will not be deficient in calcium.
However, if the newborn baby because of vitamin D insufficiency, caused by calcium absorption obstacles, resulting in rickets, first of all, we must supplement enough vitamin D, if the situation is more serious, you can under the guidance of the doctor to supplement the appropriate calcium supplements.
In summary, parents should not blindly give newborns calcium supplements by themselves, and if necessary, they must use medication under the guidance of a doctor.