Melrose Certified Organic Spirulina is a wholesome green superfood. Spirulina is grown in fresh spring water with an abundance of sunshine. Spirulina is a good supplement for diets deficient in green vegetables. Rich in chlorophyll, spirulina has up to 13% of essential minerals like calcium, magnesium, potassium, phosphorus, iron, and zinc as well as complete vitamin B group vitamins and many important antioxidants.