Healthy Origins Organic Spirulina 500 mg. - 720 Tablet(s) Healthy Origins Organic Spirulina 500 mg. naturally contains over 60% protein and is a great source of many important phytonutrients and minerals such as carotenoids, essential fatty acids, iron, magnesium, calcium and selenium. Spirulina is a fresh water blue-green algae that delivers one of the most complete nutrient profiles found in nat