Vitamin K is found in leafy green vegetables, broccoli, and Brussels sprouts. It plays a major role in supporting the body's ability to clot blood when needed, and is therefore used to counter the effects of blood-thinning medications when too much is given.
Vitamin K can help promote stronger bones. It can also relieve the itching that often accompanies the liver disease biliary cirrhosis.
People apply vitamin K topically to skin to reduce spider veins, bruises, scars, stretch marks, and burns. It can also help in treating rosacea, a skin condition that causes redness and pimples on the face. After surgery, vitamin K is often used to help reduce bruising and swelling.