Spirulina are a large number of cyanobacteria or blue-green algae. These algae are found in warm, alkaline waters around the world, especially of Mexico and Central Africa.[2] The nutritional values of Spirulina have drawn attention over a few decades:

• Contain high content of protein (60-70%), a source of many types of essential amino acids [2,9,10]
• Consist of multivitamins, especially B12 and β-carotene.[2,10-11] β-carotene is an antioxidant which could suppress the damage to cells by free radicals, slow down aging and chronic diseases. In human body, β-carotene is converted to pro-vitamin A which has beneficial effects to the eyes and skin. [11]
• Rich in minerals, such as iron, magnesium and calcium [12]
• Serve as a source for high content of EPA and gamma-linoleic acid [13]
• Compose high content of DNA and RNA. Spirulina also contains phycocyanin. When combined with chlorophyll, they become antioxidants.[2,14]