Table 3.

Current CF Foundation recommendations for antioxidant supplementation [109]

Supplement	How often to measure levels	Recommended supplementation dose
β-Carotene	At physician's discretion	None
Vitamin A	Annually	0 - 12 months 1500 IU
		1 - 3 years 5000 IU
		4 - 8 years 5 - 10,000 IU
		>8 years 10,000 IU
Vitamin E	Annually	0 - 12 months 40 - 50 IU
		1 - 3 years 80 - 150 IU
		4 - 8 years 100 - 200 IU
		>8 years 200 - 400 IU
Zinc	Not recommended	Supplementation is reasonable in those with suboptimal vitamin A status or with night blindness that does not respond to vitamin A supplementation. A 6-month supplementation trial of Zn should be considered for children who are not growing well.
Other non-fat-soluble vitamins and minerals		A standard, age-appropriate dose of non-fat-soluble multivitamins should be given daily.