Spirulina is considered a complete nutritional powerhouse because it contains a unique combination of nutrients that no single plant source can provide. - It contains a high percentage of protein including all eight essential amino acids in a balanced ratio. It contains a high percentage of beta-carotene, vitamin E and iron, and is the richest source of vitamin B12 It contains nucleic acids in addition to a high percentage of micronutrients such as potassium, sodium and zinc Due to its high nutritional value, spirulina is popular as a great diet product It is widely used as a nutritional supplement for all age groups