Spirulina Powder Spirulina is a type of blue-green algae that people can take as a dietary supplement. People consider spirulina a superfood due to its excellent nutritional content and health benefits. Spirulina has a high protein and vitamin content, which makes it an excellent dietary supplement for people on vegetarian or vegan diets. Research suggests that spirulina has antioxidant and inflammation-fighting properties, as well as the ability to help regulate the immune system 1. Excellent nutritional profile 2. Losing weight 3. Improving gut health 4. Managing diabetes 5. Lowering cholesterol 6. Reducing blood pressure 7. Preventing heart disease 8. Boosting metabolism 9. Reducing allergy symptoms 10. Antitoxic action 11. Supporting mental health