Where can you find a list of foods that contain vitamin K?

A chart of foods containing vitamin K can be found online at Coumadin.com. In general, leafy greens such as kale and spinach contain the highest amounts of vitamin K. For the average adult, the recommended daily allowance is 90 micrograms per day, states the National Library of Medicine.

Vitamin K helps build strong bones, promotes heart health and is essential for the blood clotting process in the body. People who take blood thinners are often advised to monitor their intake of vitamin K because it can interfere with the effectiveness of the medication, according to the National Institutes of Health.