Vitamin K is important in blood clotting, building bones and protecting the heart. This fat soluble group of vitamins is found in a number of plants including asparagus, broccoli and leafy vegetables such as kale and spinach. Herbs high in vitamin K include parsley, basil, sage, thyme, cilantro leaf, oregano and marjoram.
There are several forms of Vitamin K; vitamin K1 (phylloquinone or phytomenadione), vitamin K2 (menaquinone). Menadione, or vitamin K3 is a synthetic form of vitamin K that is used as supplements.
Patients taking the drug warfarin (also known as Coumadin) are advised to restrict their intake of vitamin K. Vitamin K is necessary for synthesis of blood clotting proteins in the liver and so it counteracts the anticoagulant effects of warfarin. Vitamin K is good for blood vessel health and can help decrease bruising because of its effects on blood clotting.
In skin care vitamin K is thought to help with conditions having to do with the circulatory system such as dark circles around the eyes, rosacea and redness from broken capillaries (especially on the cheeks). Vitamin K also has some antiinflammatory activities. We use extract of parsley in some products because of its high vitamin K content.