Super Foods Rx: Vitamins A, C, K; Folic acid; Iron; Lutein. Great for salads or cooking! Why our spinach is so fresh! Freshness is everything we stand for. Everything we do - grow, harvest, wash, package and deliver - is designed to give you the freshest spinach possible. Hydro-Jet washed. Thoroughly cleaned so you don't have to. Just open and serve! Brrr. We keep our spinach very cold all the way to the store guaranteeing freshness. No preservatives! We don't need them because our special Keep-Crisp bag is custom made to keep each individual salad blend fresh - without preservatives. Be happy. We're not satisfied until you are. Spinach is a documented SuperFood! Spinach has more demonstrated health benefits than almost any other food. With most SuperFoods, there are one or two nutrients in particular that push an individual food to best in category, with spinach, the list is so long and impressive that the wide range of individual nutrients coupled with the unmatched synergy of those nutrients make it a top SuperFood. -SuperFoods Rx by Steven Pratt, M.D., and Kathy Matthews. Nutritional Information on Lutein (Lutein participates in antioxidant activity which helps maintain immune function.): Spinach contains 10.5mg of Lutein per 85 gram serving (about 4 cups raw).