Source Naturals, Blue-Green Algae, Powder 4 OzProduct Description Considered as Dietary Supplement Freeze Dried From Klamath Lake Product Benefits Ingredients Supplement Facts Serving Size: 1 2 Teaspoon (approx. 1 gram) Servings Per Container: 113 Amount Per Serving %DV* Protein 1 g 2% Blue Green Algae 1 g (Aphanizomenon flos aquae) Yielding approximately**: Vitamin E 0. 23 IU <2% Vitamin B 12 0. 26 mcg 4% Calcium 7 mg <2% Phosphorus 7 mg <2% Iodine 22 mcg 15% Magnesium 2 mg <2% Zinc 7 mg 45%