The Recommended Dietary Allowance, or RDA for short, is a system used in both the United States and Canada to set the healthy norms for the intake of the most common nutrients. These allowances are reviewed every 5-10 years and are meant to provide superior nutrition for civilians and military personnel, so they included a "margin of safety."
USDA nutritionists utilize these set of guidelines, that also included the number of servings of each food group, in order to make it easier for people to receive their RDAs of each nutrient.
The table below shows the quantities of each nutrient recommended.
Nutrient |
RDI/AI |
UL |
units per day |
Vitamin A |
5000 |
15000 |
IU |
Vitamin C |
90 |
2000 |
mg |
Vitamin D |
200 |
2000 |
IU |
Vitamin K |
120 |
ND |
µg |
Vitamin B6 |
1.3 |
100 |
mg |
α-tocopherol (E) |
15 |
1000 |
IU |
Biotin |
30 |
ND |
µg |
Boron |
- |
20 |
mg |
Calcium |
1000 |
2500 |
mg |
Chloride |
2300 |
3600 |
mg |
Chromium |
35 |
ND |
µg |
Choline |
550 |
3500 |
mg |
Copper |
900 |
10000 |
µg |
Cyanocobalamin (B12) |
2.4 |
ND |
µg |
Fluoride |
4 |
10 |
mg |
Folate (B9) |
400 |
1000 |
µg |
Iodine |
150 |
1100 |
µg |
Iron |
8 |
45 |
mg |
Magnesium |
420 |
350a |
mg |
Manganese |
2.3 |
11 |
mg |
Molybdenum |
45 |
2000 |
µg |
Niacin (B3) |
16 |
35 |
mg |
Nickel |
- |
1.0 |
mg |
Pantothenic acid (B5) |
5 |
ND |
mg |
Phosphorus |
700 |
4000 |
mg |
Potassium |
4700 |
ND |
mg |
Thiamin (B1) |
1.2 |
ND |
mg |
Riboflavin (B2) |
1.3 |
ND |
mg |
Selenium |
55 |
400 |
µg |
Sodium |
1500 |
2300 |
mg |
Sulfate |
- |
ND |
- |
Zinc |
11 |
40 |
mg |
|