Earthier - Sun Farm Organics uses natural organic practises and wisdom of the land to produce food supplements based on real food. The company does not use any preservatives, binders, fillers, magnesium stearates and unless stated are all VEGAN friendly. Contributes to the normal production of thyroid hormones and normal thyroid function. Natural source of iodine which contributes to normal cognitive function, normal energy yielding metabolism, functioning of the nervous system, maintenance of normal skin. Sea Kelp is a Certified Organic source of Iodine from Seaweed harvested in the United Kingdom.