Spirulina, literally the most nutritious food known, is an edible blue-green algae used all over the world for its nutritional and medicinal qualities. It is very common for people consuming Spirulina to experience a jump in energy and vitality. The reason is simple: Spirulina is a powerhouse of nutrition.Spirulina is about 60% complete protein, quite a large amount when compared to beef or chicken (approximately 25% protein each). 'Complete' protein means that it contains all eight of the essential amino acids that our bodies require to thrive. It has 10 other non-essential amino acids that play important supporting roles in good health.