Spirulina is one of the highest protein-rich foods in the plant kingdom. It is a type of microalgae which has the ability to produce a high quality of complete protein and essential nutrients more efficiently than most other food sources. One tablespoon of spirulina contains 5-6 grams of bioavailable protein. Spirulina has been widely used in West Africa since the 1970's to treat malnutrition and was also popularized by NASA, for the American astronauts! It is energizing and detoxifying, containing phytonutrients, antioxidants, essential vitamins and minerals, including chlorophyll, zeaxanthin, beta-carotene, GLA, iron and the blue-green pigment phycocyanin. Spirulina can be added to protein drinks, green smoothies or simply mixed into water, alternatively it can be taken in tablet form.