Nature's Own kelp supplement contains 3 species of wild bladderwrack (the type of seaweed) Our kelp is iodine rich and also contains a broad spectrum of minerals, trace elements, micro-nutrients, vitamins, prebiotics and carotenoids Each gluten free capsule provides 400mg of Kelp yielding 280ug iodine Certified Organic and guaranteed Free from all pollutants From a sustainable and clean supply of kelp The mineral iodine helps make the thyroid hormones. These hormones help keep cells and the metabolic rate healthy Iodine contributes to the normal production of thyroid hormones and normal thyroid function Suitable iodine levels are important in preconception, pregnancy and breastfeeding as the nutrient supports the baby's future neural development Iodine cannot be stored by the body for a long period and it must be obtained regularly via the diet or supplements Amongst various recognised functions iodine contributes to normal cognitive function and to normal functioning of the nervous system