Nutriorg Spirulina Powder is 100% pure & Natural and is cultivated in open-air freshwater ponds which are high in proteins and vitamins. Thus it has led many to classify it as the most nutrient-dense food on the planet. Compared to other food grains it lives up to this reputation and is a great source of numerous vitamins and minerals including Vitamin-B1, B-2, B-3, B-6, B-9 Vitamin-c, Vitamin-D, Vitamin-A And Vitamin-E. Nutriorg Spirulina Powder is also a great source of Potassium, Calcium, Chromium, Copper, Iron, Magnesium, Manganese, Phosphorous, Sodium and Zinc. Regular use helps to improve the Immune System.