Vitamin K is a fat-soluable vitamin primarily noted for its importance in the formation of prothrombin, enabling your blood to clot when you cut yourself. It also plays a role in maintaining proteins necesary for maintenance of blood plasma, the sketal system, and the kidneys.

Good sources of vitamin K:

• Green leafy vegetables
• Cabbage
• Cereals

References:

• National Research Council. Recommended Dietary Allowances, 10th Edition. Washington: 1989.
• Brody, Jane. Jane Brody's Nutrition Book. Bantam Books. 1987.