The best time for infants to take vitamin AD drops is one week after birth for preterm infants and two weeks after birth for full-term infants.
Vitamin AD drops contain vitamin A and vitamin D, both fat-soluble vitamins, have the effect of promoting the absorption of calcium, vitamin AD is best absorbed half an hour after milk, so half an hour after milk can be taken. Fasting state easily lead to nausea and vomiting of the baby.
Normal babies can stop taking it until they are two years old. However, if there are obvious cases of vitamin D deficiency, it can be taken until the age of three. In addition to supplementing vitamin AD drops, ensure that 1~2 hours of outdoor exercise every day can also promote the absorption of calcium, which is conducive to the development of bones.