Kelp is a large, leafy seaweed belonging to the brown algae family that grows in "forests" in the colder waters of the world’s oceans. Kelp has been used for centuries as an important nutritious staple ingredient in Chinese, Japanese, and Korean cuisines. It is also an excellent source of iodine, which has been shown to be essential for healthy thyroid function. Powder format adds versatility to adjust dosage, and can be added to health shakes, and juices.Each level scoop (90 mg) contains:Iodine  [from Organic Kelp (Laminaria spp.) (Whole Plant)]   450 mcgNon-Medicinal Ingredients: None.   Entire contents derived from natural marine sources.100% naturally sourced ingredients. Adults and Adolescents 14 over : Take 1 level scoop, once daily. Serving Scoop Enclosed.