Reference Daily Intake




Reference Daily Intake (RDI) A replacement term for "USRDA" (Recommended Daily Allowance), a set of reference values introduced in 1973 to be used for vitamins, minerals, and protein to help consumers evaluate the nutritional content for food labels. For the time being, RDIs are identical to the USRDAs except for protein, which is adjusted to the specific needs of different age groups.

NUTRIENT

AMOUNT

Vitamin A

5,000 International Units (IU)

Vitamin C

60 milligrams (mg)

Thiamin

1.5 mg

Riboflavin

1.7 mg

Niacin

20 mg

Calcium

1.0 gram (g)

Iron

18 mg

Vitamin D

400 IU

Vitamin E

30 IU

Vitamin B

2.0 mg

Folic acid

0.4 mg

Vitamin B

6 micrograms (mcg)

Phosphorus

1.0 g

Iodine

150 mcg

Magnesium

400 mg

Zinc

15 mg

Copper

2 mg

Biotin

0.3 mg

Pantothenic acid

10 mg

(Based on National Academy of Sciences' 1968 Recommended Dietary Allowances.)

Vitamin K

80 mcg

Molybdenum

75 mcg

Chloride

3,400 mg

Manganese

2.0 mg

Selenium

70 mcg

Chromium

120 mcg