Functions
- enzymatic function
Deficiency
- not known in humans
Good Sources
- green, leafy vegetables
- nuts
- beans
- whole grains
- fruit
- tea
Adequate Intakes (AI)
- Males (adults)
- 2.3 mg
- Females (adults)
- 1.8 mg
- Sufficient data to set RDA are unavailable
Tolerable Upper Intake Levels (UL)
- Adults (19 to 50 yrs)
- 11 mg
Intakes above UL may lead to negative health consequences.
Supplementation
- Not necessary, not recommended
