Source Naturals Yaeyama Chlorella is 100% freshwater chlorella grown on the coral reef island of Ishigaki Japan. Chlorella is a green superfood of pure algae that is a rare vegetarian source of true vitamin B-12. It is also a good source of iron and vitamin A and a complete vegetarian protein. Chlorella gets its green color from the plant pigment chlorophyll. Our non-GMO chlorella is made from 100% chlorella and is free of binders fillers or excipients. Preliminary evidence including some human research suggests that chlorella may help support the health of the liver and the immune system