How old should children take vitamin AD drops until?

Generally, vitamin AD drops can be taken until around 2 years of age. The detailed explanation is as follows:

Vitamin A and D are very important for a baby's growth and development. Vitamin A plays a crucial role in the development of vision, the integrity of respiratory and digestive mucous membranes, and the function of the immune system. Vitamin D helps promote calcium absorption and utilization, which is essential for the growth and development of a baby's bones.

During the first two years of a baby's life, rapid growth and development occur, and the demand for vitamins A and D is relatively high. New vitamin AD drops can provide sufficient vitamin A and D to prevent deficiencies such as night blindness and rickets. However, after the age of 2, a baby's diet gradually becomes more diverse, and intake of vitamins A and D from food sources will correspondingly increase. If the child maintains a balanced diet, has sufficient outdoor activity, and is regularly exposed to sunlight, the supplementation of new vitamin AD drops can be appropriately reduced or discontinued according to a doctor's advice.

Each child is different, and the duration and dosage of vitamin AD supplementation should be conducted under the guidance of a doctor. If symptoms of vitamin A and D deficiency appear, such as night blindness, pigeon chest, or bowed legs, the supplementation period may need to be extended or the dosage increased. Additionally, during the course of supplementation, it is important to monitor the child's response, and if discomfort or allergic symptoms occur, medical attention should be sought promptly.