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How do you know when it's OK to take more vitamins and minerals than the recommended dietary allowance (RDA) or daily value (DV)?

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Taking too much of some supplements can lead to an overdose or serious side effects.

One way is to look for the UL (tolerable upper intake level) of a nutrient. That’s the most amount you can safely take.

Taking too much of some supplements can lead to an overdose or serious side effects.

One way is to look for the UL (tolerable upper intake level) of a nutrient. That’s the most amount you can safely take.

SOURCES:

Institute of Medicine (IOM): "Dietary Reference Intakes for Calcium and Vitamin D."

Paul M. Coates, PhD, director, Office of Dietary Supplements, National Institutes of Health, Bethesda, MD.

FamilyDoctor.org: "Vitamins and Minerals: What You Should Know."

International Food Information Council: "Dietary Reference Intakes: An Update."

National Osteoporosis Foundation: "NOF Scientific Statement: National Osteoporosis Foundation's Updated Recommendations for Calcium and Vitamin D3 Intake."

Office of Dietary Supplements: "Dietary Reference Intakes."

Paul R. Thomas, EdD, RD, scientific consultant, Office of Dietary Supplements, National Institutes of Health, Bethesda, MD.

Reviewed by Sabrina Felson on July 30, 2020

SOURCES:

Institute of Medicine (IOM): "Dietary Reference Intakes for Calcium and Vitamin D."

Paul M. Coates, PhD, director, Office of Dietary Supplements, National Institutes of Health, Bethesda, MD.

FamilyDoctor.org: "Vitamins and Minerals: What You Should Know."

International Food Information Council: "Dietary Reference Intakes: An Update."

National Osteoporosis Foundation: "NOF Scientific Statement: National Osteoporosis Foundation's Updated Recommendations for Calcium and Vitamin D3 Intake."

Office of Dietary Supplements: "Dietary Reference Intakes."

Paul R. Thomas, EdD, RD, scientific consultant, Office of Dietary Supplements, National Institutes of Health, Bethesda, MD.

Reviewed by Sabrina Felson on July 30, 2020

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