Till what age Vitamin D3 and iron be given to kids.

A. you have to continue vitamin d3 supplement till you are not able to take the child in sunlight. if you are giving 400 units you have to give 1ml everyday and if you're giving 800 units you haved to give 0.5 ml everyday. the thing is that you have to keep the child in sunlight for at least half can hour between 9 a.m. to 5 p.m. for proper vitamin d exposure. so if you are able to take the child in sunlight you can stop vitamin d supplement