Are you finding yourself deficient in vitamin K based on some symptom you're experiencing? Vitamin K is in soybeans, cashews, broccoli, chicken, grapes, blueberries, and a bunch of oils, including soybean, olive, and canola oils, and the list goes on and on. Vitamin K deficiency in adults is extremely rare.

Like every other vitamin and mineral, eating average healthy (and even lots of unhealthy) foods will meet your RDA.