Spirulina is a single-celled fresh water algae and an incredible source of nutrients. It provides generous amounts of Beta-Carotene, Vitamin B-12, Iron and Chlorophyll. Spirulina also provides RNA, DNA and important GLA fatty acids. (100 capsules at 760 mg per pill) 

"Spirulina is one of the most concentrated natural sources of nutrition known. It contains all the essential amino acids, is rich in chlorophyll, beta-carotene and its co-factors, and other natural phytochemicals. Spirulina is the only green food rich in GLA essential fatty acid. GLA stimulates growth in some animals and makes skin and hair shiny and soft yet more durable." 
http://www.squidoo.com/using-spirulina