Orange is good source of vitamin B1. Cod-liver oil has high levels of the omega-3 fatty acids, eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). Cod liver oil is good source of vitamin D. Wheat germ oil is one of the most concentrated natural sources of vitamin E. Alfalfa contains is good source of Vitamin K, which is necessary for blood clotting.