NOW Foods Kelp, 150mcg 200 tabs. Iodine (from Organic Kelp) (Laminaria spp.). (Whole Plant) 150 µg 100%. Ingredients : Iodine (from Organic Kelp) (Laminaria spp.). (Whole Plant), Cellulose, Stearic Acid (vegetable source), Magnesium Stearate (vegetable source) and Vegetarian Coating.