Generally speaking, it is recommended that children supplement about 12 mg of lutein ester every day, and the duration can be one week, half a month, one month, etc. If the child does not feel any discomfort and has improved, it can be extended appropriately. Replenishment time. Our children take Dr. Duo blueberry lutein ester-containing pills, which contain 6 mg of lutein ester in every 2 pills. Just take 2-4 pills a day, and it is easy to control the dosage.