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manufacturers make about their products. We cannot be held responsible for typographical errors or product formulation changes. You
should read carefully all product packaging. If you have or suspect that you have a medical problem, promptly contact your health
care provider. Information and statements regarding dietary supplements have not been evaluated by the Food and Drug
Administration and are not intended to diagnose, treat, cure, or prevent any disease.
physician or other medical professional. You should not use the information contained herein for diagnosing or treating a health
problem or disease, or prescribing any medication. Information about each product is taken from the labels of the products or from the
manufacturer's advertising material. Straight from the Clay.com. is not responsible for any statements or claims that various
manufacturers make about their products. We cannot be held responsible for typographical errors or product formulation changes. You
should read carefully all product packaging. If you have or suspect that you have a medical problem, promptly contact your health
care provider. Information and statements regarding dietary supplements have not been evaluated by the Food and Drug
Administration and are not intended to diagnose, treat, cure, or prevent any disease.
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Digestive Enzymes, Probiotics, Vitamins, Minerals, Phytonutrients, Fatty Acids
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| Complementary Alternative Medicine (CAM). |
Water Soluble Vitamins
Fat Soluble Vitamins
Fat Soluble Vitamins
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Vitamins
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Vitamin K
General description
Vitamin K is a fat-soluble nutrient essential to the health of the human body,
where it plays crucial roles in blood coagulation and bone formation. There are
three major forms of vitamin K: vitamin K-1 (phylloquinone), the natural form
found in plants; vitamin K-2 (menaquinone), produced by bacteria in the
intestines; and vitamin K-3 (menadione), a synthetic form available only by
prescription. The preferred form used in multivitamin and individual
supplements is vitamin K-1. There is also a water-soluble form of vitamin K
(phytonadione) which is used in some topical formulations.
Food sources
Some of the richest dietary sources of vitamin K are seaweed and green leafy
vegetables. Other good sources include liver, cauliflower, soybeans, cheese,
egg yolk, strawberries, tomatoes, and potatoes.
Health applications
Prenatal nutrition
Bone strength
Dosage/toxicity
The reference daily intake (RDI) for vitamin K is 80 mcg/day for adults, an
amount which can easily be obtained through intake of green leafy vegetables.
While excessive consumption of synthetic vitamin K (K-3) may cause liver
damage, there are no known side effects or toxicity associated with
consumption of natural-source vitamin K (K-1 or K-2). Because vitamin K may
counteract the activity of some prescription blood-thinners (such as warfarin),
anyone taking these drugs should not supplement vitamin K without consulting
a physician.
General description
Vitamin K is a fat-soluble nutrient essential to the health of the human body,
where it plays crucial roles in blood coagulation and bone formation. There are
three major forms of vitamin K: vitamin K-1 (phylloquinone), the natural form
found in plants; vitamin K-2 (menaquinone), produced by bacteria in the
intestines; and vitamin K-3 (menadione), a synthetic form available only by
prescription. The preferred form used in multivitamin and individual
supplements is vitamin K-1. There is also a water-soluble form of vitamin K
(phytonadione) which is used in some topical formulations.
Food sources
Some of the richest dietary sources of vitamin K are seaweed and green leafy
vegetables. Other good sources include liver, cauliflower, soybeans, cheese,
egg yolk, strawberries, tomatoes, and potatoes.
Health applications
Prenatal nutrition
Bone strength
Dosage/toxicity
The reference daily intake (RDI) for vitamin K is 80 mcg/day for adults, an
amount which can easily be obtained through intake of green leafy vegetables.
While excessive consumption of synthetic vitamin K (K-3) may cause liver
damage, there are no known side effects or toxicity associated with
consumption of natural-source vitamin K (K-1 or K-2). Because vitamin K may
counteract the activity of some prescription blood-thinners (such as warfarin),
anyone taking these drugs should not supplement vitamin K without consulting
a physician.