Spirulina is a blue-green microalgae that has naturally occurring protein, plus other nutrients such as vitamins, minerals and GLA (gamma-linolenic acid). NOW Certified Organic Spirulina Tablets are pure and contain no excipients, binders, or additives. NOW Spirulina delivers the natural nutrient profile found in genuine whole foods. Natural color variation may occur in this product. Take 6 tablets daily. Store in a cool, dry place after opening. For adults only. Consult physician if pregnant/nursing, taking medication, or have a medical condition. Keep out of reach of children.