Thyroid Support contains L-tyrosine, an amino acid that the thyroid uses to make its hormones. Seagreens® Ascophyllum nodosum is the organic kelp (a type of seaweed) species that is used in this product. It provides a natural source of iodine.DirectionsOne or two capsules daily as a food supplement or as directed by a practitioner.IngredientsL-Tyrosine, organic kelp (Seagreens® Ascophyllum nodosum) providing iodine, manganese, selenium (from yeast), vegetable celluloseAllergen InformationVegetarian,Vegan,Certified Vegan,Hypoallergenic,Additives,Dairy Free,Lactose Free,Egg Free,Lectins Free,Wheat Free,Soya Free,Nut Free,Yeast Free,Preservative Free,Sweet Free,Sugar Free,Artificial Flavours Free,Paraben Free,Alcohol Free,GM Free,No Added SugarSweeteners and AdditivesVegetable cellulose