Spirulina is rich in a wealth of vitamins and minerals and has been described as natures multivitamin it is a single celled blue green algae produced by photosynthesis the natural process by which plants absorb energy from sunlight batches of algae multiply naturally and rapidly in pools of pure water it is harvested at the required density spirulina is high in calcium for digestive health and high in iodine and zinc for healthy hair skin and nails while chromium iron and manganese