Source Naturals, Blue-Green Algae, 500 MG, 200 TabsProduct Description 500 mg Considered as Dietary Supplement Freeze Dried From Klamath Lake Product Benefits Ingredients Supplement FactsServing Size: 2 TabletsServings Per Container: 100 Amount Per Serving %DV Protein 1 g <2%* Blue Green Algae (Aphanizomenon flos aquae) 1 g Yielding approximately**: Vitamin A (as beta carotene) 500 IU 10% Niacin 3. 5 mg 18% Vitamin B 12 0. 25 mcg 4% Iron 400 mcg 2% Phosphorus 7 mg 1% Manganese 22 mcg 1% Molybdenum 40