Spirulina Powder (Arthrospira Platensis) is a type of algae that can grow in both sea water and fresh water. It is commonly used as a dietary supplement. It has many nutrients, minerals and antioxidants that are good for both your body and brain. Some consider it to be one of the most nutrient dense foods on the earth. It may improve your levels of blood lipids, suppress oxidation, reduce blood pressure and lower blood sugar levels and HBA1C levels.