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 Shop By Category > Vitamins > Vitamin K > Vitamin K 500 mcg
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Vitamin K 500 mcg by Source Naturals

Size Price Qty  
100 Tabs
Item # 7302
In Stock
$6.50
$4.16
(Save 36%)
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200 Tabs
Item # 7303
Ships within 5 to 7 days
$11.50
$7.36
(Save 36%)
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Product Description
Supports Bone Health

Vitamin K, or phylloquinone, is a fat-soluble vitamin best known for its important function in the biological activity of several blood coagulation factors. Recent research has also shown a role for vitamin K in bone health. Vitamin K plays a key role in the synthesis of the bone proteins osteocalcin and matrix Gla-protein, which are involved in calcium and bone metabolism.

WARNINGS: Warning: If you are taking anticoagulant drugs, such as warfarin, or if you are pregnant or breastfeeding, consult your health care professional before taking this product.

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Health Encyclopedia

 What does Vitamin K do?

Vitamin K is needed for proper bone formation and blood clotting. In both cases, vitamin K does this by helping the body transport calcium. Vitamin K is used by doctors when treating an overdose of the drug warfarin. Also, doctors prescribe vitamin K to prevent excessive bleeding in people taking warfarin but requiring surgery.

There is preliminary evidence that vitamin K2 (menadione), not vitamin K1 (phylloquinone; phytonadione), may improve a group of blood disorders known as myelodysplastic syndromes (MDS).1 These syndromes carry a significantly increased risk of progression to acute myeloid leukemia. Large-scale trials of vitamin K2 for MDS are needed to confirm these promising early results.


Read more on Vitamin K >

View References
Supplement Facts
Serving Size:  1 Tablet
Servings Per Container:  100

  Amount
Per Serving
% Daily
Value*

Vitamin K 500 mcg 620%

Calcium 59 mg 6%

* Based on a 2,000 calorie diet
** Daily Values not established


Other Ingredients: dibasic calcium phosphate, microcrystalline cellulose, stearic acid, colloidal silicon dioxide, and magnesium stearate.

Recommended Use: use as a dietary supplement take: 1 tablet daily, preferably with a meal, or as recommended by your health care professional