TABLE C-6 Dietary Reference Intakes: Tolerable Upper Intake Levels (ULa), Vitamins

Life Stage Group

Vitamin A (μg/d)b

Vitamin C (mg/d)

Vitamin D (μg/d)

Vitamin E (mg/d)c,d

Vitamin K

Thiamin

Infants

 

0–6 mo

600

NDf

25

ND

ND

ND

7–12 mo

600

ND

25

ND

ND

ND

Children

 

1–3 y

600

400

50

200

ND

ND

4–8 y

900

650

50

300

ND

ND

Males, Females

 

9–13 y

1,700

1,200

50

600

ND

ND

14–18 y

2,800

1,800

50

800

ND

ND

19–70 y

3,000

2,000

50

1,000

ND

ND

> 70 y

3,000

2,000

50

1,000

ND

ND

Pregnancy

 

14–18 y

2,800

1,800

50

800

ND

ND

19–50 y

3,000

2,000

50

1,000

ND

ND

Lactation

 

14–18 y

2,800

1,800

50

800

ND

ND

19–50 y

3,000

2,000

50

1,000

ND

ND

aUL = The maximum level of daily nutrient intake that is likely to pose no risk of adverse effects. Unless otherwise specified, the UL represents total intake from food, water, and supplements. Due to lack of suitable data, ULs could not be established for vitamin K, thiamin, riboflavin, vitamin B12, pantothenic acid, biotin, or carotenoids. In the absence of ULs, extra caution may be warranted in consuming levels above recommended intakes.

bAs preformed vitamin A only.

cAs α-tocopherol; applies to any form of supplemental α-tocopherol.



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