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Vitamin K - Recommendations

Alternative Names

Phylloquinone; K1; Menaquinone; K2; Menadione; K3

Recommendations:

The Recommended Dietary Allowance (RDA) for vitamins reflects how much of each vitamin most people should get each day.

  • The RDA for vitamins may be used as goals for each person.
  • How much of each vitamin you need depends on your age and gender.
  • Other factors, such as pregnancy, breast-feeding, and illness may increase the amount you need.

The Food and Nutrition Board at the Institute of Medicine Recommended Intakes for Individuals - Adequate Intakes (AIs) for vitamin K:

Infants

  • 0 - 6 months: 2.0 micrograms per day (mcg/day)
  • 7 - 12 months: 2.5 mcg/day

Children

  • 1 - 3 years: 30 mcg/day
  • 4 - 8 years: 55 mcg/day
  • 9 - 13 years: 60 mcg/day

Adolescents and Adults

  • Males and females age 14 - 18: 75 mcg/day
  • Males and females age 19 and older: 90 mcg/day
  • Reviewed last on: 2/8/2011
  • Alison Evert, MS, RD, CDE, Nutritionist, University of Washington Medical Center Diabetes Care Center, Seattle, Washington. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

References

Escott-Stump S, ed. Nutrition and Diagnosis-Related Care. 8th ed. Philadelphia, Pa: Lippincott Williams & Wilkins; 2008.

Sarubin Fragaakis A, Thomson C. The Health Professional's Guide to Popular Dietary Supplements. 3rd ed. Chicago, IL: American Dietetic Association;2007.

Institute of Medicine, Food and Nutrition Board. Dietary Reference Intakes for Vitamin A, Vitamin K, Arsenic, Boron, Chromium, Copper, Iodine,Iron, Manganese, Molybdenum, Nickel, Silicon, Vanadium, and Zinc. National Academy Press, Washington, DC, 2001.

Rakel D, ed. Integrative Medicine. 2nd ed. Philadelphia, Pa: Saunders Elsevier; 2007.

Hamrick I, Counts SH. Vitamin and mineral supplements. Wellness and Prevention. December 2008:35(4);729-747.

Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007.

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