Spirulina is a microscopic spiral shaped, blue-green vegetable algae. It has been used as a significant food source for centuries. Spirulina is highly digestible and the most nutritious, concentrated whole- food known to humankind. It is nature's richest whole-food source of complete protein. Rich in GLA, it also contains important B complexes including bio-available B12 and other essential organic, whole-food minerals and trace elements.