1.Food-grade 100% pure spirulina powder 2.High Protein >62% 3.Very low heavy metal content ... contains many different minerals, including calcium, chromium, copper, iron, magnesium, manganese, phosphorus, selenium, sodium, zinc, and large amounts of potassium.Additionally ... of spirulina, which is a reason many people take spirulina powder daily, is that it is believed to reduce allergic reactions ...