There are foods that help anxiety, but just as important is making sure that you're not eating foods that contribute to anxiety. Examples of these types of foods include fried foods, high glycemic carbs, unrefined sugars, and alcoholic beverages.
Vitamin K is a fat-soluble vitamin. The recommended dietary allowance (RDA) for vitamin K is 80 mg/day for the adult man, 65 mg/day for the adult woman, and 5 mg/day for the newborn infant. The vitamin K present in plant foods is called phylloquinone; while the form of the vitamin present in animal foods is called menaquinone.
No Vitamin K is something they inject in your baby. It depends on the state (what it is made of), but I call it eye goop. You can opt out of it, but depending on the state they can give you a hard time. I highly suggest researching Vitamin K.