No Observed Adverse Effect Level and Lowest
Observed Adverse Effect Level
NUTRIENT
NOAEL**
LOAEL***
Vitamin A
10000 IU
21600 IU
Beta-Carotene
25 mg.
*
Vitamin C
More than 1000 mg
*
Vitamin E
1200 IU
*
Vitamin B1 (Thiamin)
50 mg
*
Vitamin B2 (Riboflavin)
200 mg
*
Vitamin B6 (Pyridoxine)
200 mg
500 mg
Vitamin B12
1000 mcg
*
Folic Acid
1 mg
*
Biotin
2500 mcg
*
Nicotinic Acid
500 mg. (250 mg SR)
1000 mg (500 mg SR)
Nicotinamide
1500 mg
3000 mg
Selenium
200 mcg
910 mcg
Magnesium
700 mg
*
Zinc
30 mg
60 mg
Vitamin D
800 IU
2000 IU
Vitamin K (phylloquinone)
30 mg
*
Niacin
*
*
Pantothenic Acid
1000 mg
*
Calcium
1500 mg
More than 2500 mg
Iron
65 mg
100 mg
Phosphorus
1500 mg
More than 2500 mg
Iodine
1000 mcg
*
Copper
9 mg
*
Manganese
10 mg
*
Chromium
1000 mcg
*
Molybdenum
350 mcg
*
Chloride
*
*
Potassium
*
*
Boron
*
*
Nickel
*
*
Silicon
*
*
Tin
*
*
Vanadium
*
*
Lutein
*
*
*
None established
**
NOAEL is a level that should be considered safe and requires no application of
a safety factor to determine a safe intake, based on the most sensitive subgroup.
***
LOAEL is a level that should NOT be considered safe for everyone and may
require the application of a safety factor to calculate a safe intake.