Generally speaking, full-term infants should be supplemented with vitamin D two weeks after birth, and vitamin D drops and Yikexin are commonly used. Yikexin is mainly used to supplement vitamin AD, and it is said that vitamin A may be excessive.

However, if it is supplemented according to the instructions, it will generally not lead to excessive vitamin A. Bao Ma can take Iconoxin and vitamin D drops alternately, for example, each medicine is taken orally for one month and then replaced. Generally, one pill a day, once a day, is recommended to be supplemented until one to two years old.

The so-called AD agent is actually a mixture of vitamin A and vitamin D, which usually contains vitamin A 1500 units and vitamin D3500 units.

Full-term infants should be supplemented every day from the second week of birth, and premature twins should be supplemented every day from the first week of birth. Vitamin AD can be supplemented 1~3 months later and changed to vitamin D alone, with at least 400 units per day to prevent rickets.

However, it is suggested that vitamin AD treatment should be supplemented with a vitamin alone, especially for children in the north. The short sunshine time is easy to cause vitamin D deficiency and rickets.