Tolerable Upper Intake Level (UL)

  • Assessment
  • Planning
  • Diet
  • Fortification
  • Supplementation


The highest average daily nutrient intake level likely to pose no risk of adverse health effects to almost all individuals in the general population. As intake increases above the UL, the potential risk of adverse effects increases.


Institute of Medicine (2000). Dietary Reference Intakes: Applications in Dietary Assessment, The National Academies Press.