Single Herb Supplement. Promotes a healthy thyroid. A natural source of iodine. Kelp Thallus (ascophyllum nodosum) is a salt-water plant that is high in minerals including iodine, which is needed for healthy thyroid function. Since 1972. Nature's Answer capsules feature the highest quality of organic, responsibly wildcrafted or cultivated herbs, which maintain the naturally-occurring constituents found in the plant. They are carefully selected and finely milled (micronized), allowing faster absorption by the body; manufactured to cGMP (current good manufacturing practices) standards; free of synthetic ingredients. Unconditionally guaranteed. (These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure or prevent any disease).