After the baby is 15 days old, doctors will recommend vitamin AD drops for the baby’s health, so I’m sure mothers already know the importance of taking vitamin AD for babies in infancy. However, as babies grow up, many mothers begin to have doubts – should young children continue to take vitamin AD supplements? Babies between the ages of 1 and 3 years old have an increasing activity level compared to the age of 1 year old, and are in the critical period of dental growth and learning to walk, and their bones are developing more vigorously. Although the variety of foods available to babies at this time has increased, relying on food alone to supplement vitamin AD is far from the daily requirement, and most babies have already started to say goodbye to breast milk during this period, and the amount of vitamin AD intake through breast milk has also decreased greatly. Because vitamin A and vitamin D are unstable and prone to oxidation and failure when exposed to air and light, the vitamin AD in milk powder will be lost through oxidation during repeated opening and brewing, and the actual intake will be much lower than the labeled amount. In addition, although babies after 1 year old have a relatively rich diet, the amount they get from their diet is still very limited due to their limited intake. We all know that vitamin A is essential for the health of all organs in the baby’s body as well as the epithelial tissues, and vitamin D is the key to calcium absorption. If you stop taking vitamin AD drops at this time, the effect of supplementation during infancy will be greatly reduced, resulting in calcium deficiency, decreased resistance, and in severe cases, rickets and night blindness may be induced, endangering your baby’s health. If your baby has restless sleep, excessive sweating, recurrent whistling infections, and is prone to diarrhea, then it is likely to be caused by vitamin AD deficiency. After the baby enters early childhood (1 to 3 years old), still adhere to an adequate supply of vitamin AD, “can effectively promote the baby’s calcium absorption, to ensure the integrity of the epithelial cells of the whistle and digestive tract to improve the baby’s ability to defend against diseases, and to promote the normal development of vision”. Therefore, it is recommended that: babies after the age of one should still insist on taking vitamin AD drops until they are about two years old.