The green algae Chlorella is one of nature's most nutritious plants. It also contains Chlorella Growth Factor (CGF), which is unique to Chlorella. Holistic Chlorella Yaeyama Premium Quality is one of the purest in the world and approved by the Japanese Ministry of Health. It is grown in ponds on an island 2,000 km south of Japan. Then it is dried and the cell walls are crushed using a gentle method to preserve all the nutrients.