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for a given nutrient may vary depending on a person's age, sex, and physical condition (e.g., pregnancy).
Daily Values (DVs) are used on food and dietary supplement labels to indicate the percent of the recommended daily amount of each nutrient that a serving provides. DV replaces the previous designation of United States Recommended Daily Allowances (USRDAs).
For Canada—
Recommended Nutrient Intakes (RNIs) are used to determine the amounts of vitamins, minerals, and protein needed to provide adequate nutrition and lessen the risk of chronic disease.
Vitamin E is available in various forms, including d- or dl-alpha tocopheryl acetate, d- or dl-alpha tocopherol, and d- or dl-alpha tocopheryl acid succinate. In the past, the RDA for vitamin E have been expressed in Units. This term has been replaced by alpha tocopherol equivalents (alpha-TE) or milligrams (mg) of d-alpha tocopherol. One Unit is equivalent to 1 mg of dl-alpha tocopherol acetate or 0.6 mg d-alpha tocopherol. Most products available in stores continue to be labeled in Units.
Normal daily recommended intakes in milligrams (mg) of alpha tocopherol equivalents (mg alpha-TE) and Units for vitamin E are generally defined as follows:
| Persons | U.S. | Canada | ||
| mg alpha-TE | Units | mg alpha-TE | Units | |
| Infants and children Birth to 3 years of age | 3–6 | 5–10 | 3–4 | 5–6.7 |
| 4 to 6 years of age | 11.7 | 8.3 | ||
| 7 to 10 years of age | 11.7 | 6–8 | 10–13 | |
| Adolescent and adult males | 16.7 | 6–10 | 10–16.7 | |
| Adolescent and adult females | 5–7 | 8.3–11.7 | ||
| Pregnant females | 16.7 | 8–9 | 13–15 | |
| Breast-feeding females | 11–12 | 18–20 | 9–10 | 15–16.7 |
