Spirulina is a blue-green algae. Spirulina is a form of blue-green algae and is one of the most nutritious foods known to man. Spirulina is an exceptionally rich source of vitamins, minerals, and protein, and one of the few non-animal sources of vitamin B12. It is a single-celled fresh water algae and an incredible source of nutrients. It provides generous amounts of Beta-Carotene, Vitamin B-12, Iron and Chlorophyll. Spirulina also provides RNA, DNA and important GLA fatty acids. As a health supplement, Spirulina algae is an extremely high protein source with a protein content of 60-70 percent higher than any other natural food and most nutritional products.