Bladderwrack is a form of kelp that has been used medicinally for centuries. The main use of the herb has been for the stimulation of the thyroid gland. The high iodine content of the herb stimulates thyroid function, which boosts metabolism. Bladderwrack is rich in iodine, calcium, magnesium, potassium, sodium, sulfur, silicon and iron and is high in some B-complex vitamins. Containing moderate amounts of phosphorus, selenium, manganese and zinc and small amounts of vitamins A, C, E, G. Containing anti-sterility vitamin S as well as vitamin K. It is rich in algin and mannitol, carotene and zeaxantin with traces of bromine.
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