How many days after birth do babies start taking vitamin AD and calcium supplements?

Infants can be supplemented with vitamin AD and calcium at about 15 days of birth.
Infants born around 15 days the body needs more nutrients, there may be vitamin deficiency symptoms, so you need to supplement in time, you can generally give infants take vitamin AD or vitamin D3, can effectively prevent night blindness, but also can promote the digestion and absorption of calcium.
In the process of taking vitamin AD or vitamin D3, you also need to take calcium supplements, such as calcium gluconate oral solution, which is helpful for the growth and development of infants, and can promote the development of bones, brain development, and enhance the resistance.
If infants are found to be in discomfort, it is recommended to consult a doctor for timely consultation and use medication under the doctor’s guidance.