National Research Council. "Summary Table: Tolerable Upper Intake Levels." Dietary Reference Intakes: Applications in Dietary Assessment. Washington, DC: The National Academies Press, 2000. 1. Print.
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DRI DIETARY REFERENCE INTAKES: Applications in Dietary Assessment
c The ULs for niacin, folate, and vitamin E apply to synthetic forms obtained from supplements, fortified foods, or a combination of the two.
d As α-tocopherol; applies to any form of supplemental α-tocopherol.
e ND = Not determinable due to lack of data of adverse effects in this age group and concern with regard to lack of ability to handle excess amounts. Source of intake should be from food only to prevent high levels of intake.
Copyright 2000 by the National Academy of Sciences. All rights reserved.
