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Reference system
RDA
Recommended Dietary Allowance (National Academies, USA)
AI
Adequate Intake (used when no RDA/PRI value exists)
AMDR
Acceptable Macronutrient Distribution Range
UL
Tolerable Upper Intake Level
CDRR
Chronic Disease Risk Reduction Intake
Limit
Recommended upper limit for intake
PRI
Population Reference Intake (EFSA, EU)
AR
Average Requirement (EFSA)
RI
Reference Intake range, as % of energy (EFSA)
ISSN
Sports-nutrition guideline, not an official DRV
Reference values are based primarily on Dietary Reference Intakes from the National Academies of Sciences, Engineering, and Medicine, with supporting information from EFSA and the NIH Office of Dietary Supplements.
This calculator does not replace medical or professional nutritional advice. For health concerns, special circumstances (e.g. pregnancy, breastfeeding, pre-existing conditions), or before taking any supplements, please consult a doctor or a qualified nutrition professional.