Spirulina is a type of blue-green algae that is grown in both salt and fresh water. Spirulina is one of the most popular dietary supplements in the world. It is packed with various beneficial vitamins, antioxidants, proteins and amino acids. Consuming Spirulina as part of a balanced diet can help provide our body with the right nutrients. These tablets contain 500 mg of organic Spirulina per tablet, which provide a sufficient amount of nutrients.