Vitamin K2

Calcium’s secret weapon

Why we need it

Vitamin K2 regulates calcium by taking it out of our blood and putting it into our bones, where it belongs, instead of soft tissue like arteries.*

* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

How much do I need?

There is currently no recommended daily intake (RDI) for vitamin K2. The RDI for vitamin K is 80-120 mcg for adults, and 30-75 mcg for children ages 3 to 18.1

Why we include it

Vitamin K comes in a few different forms. Vitamin K1 – the form primarily responsible for blood clotting – is found in in green, leafy vegetables like kale and broccoli, and is relatively easy to get through the diet. Vitamin K2 in the form of menaquinone-4 (MK-4) is found in meat, especially organ meats like liver. Vitamin K2 in the form of menaquinone-7 (MK-7) is only found in large amounts in natto, a fermented soy product. It’s this MK-7 form of vitamin K that has clinically-proven bone-building properties2 and lasts the longest in the bloodstream3. It is also the most rare in the western diet; this is why we chose to use the MK-7 form of vitamin K2.

Where can I get it?

  • 3 oz natto – 939 mcg
  • 3 oz blue cheese – 3 mcg (French) – 22 mcg (English)
  • 3 oz beef liver – 3 mcg
  • 3 oz pork liver – 3 mcg
  • 3 oz cheddar cheese – 2 mcg
  • 3 oz Leicester cheese – 2 mcg
  • 3 oz Edam cheese – 1 mcg

Vitamin K is an important part of natural blood clotting. If you are taking Coumadin, Warfarin or a similar blood-thinning drug, be sure to consult your health care provider before taking any supplement that includes Vitamin K. We recommend you seek the advice of your pediatrician or primary care provider before making changes to you or your child’s nutrient intake.

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  1. https://ods.od.nih.gov/factsheets/VitaminK-HealthProfessional/
  2. http://www.ncbi.nlm.nih.gov.eaccess.ub.tum.de/pubmed/?term=Vitamin+K2+(Menatetrenone)+Effectively+Prevents+Fractures+and+Sustains+Lumbar+Bone+Mineral+Density+in+Osteoporosis
  3. http://omicsgroup.org/journals/pharmacokinetics-of-menaquinone-vitamin-k-in-healthy-volunteers-2167-0870.1000160.php?aid=25495
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