[6] Sea kelp (Ascophyllum nodosum) and bladderwrack (Fucus vesiculosus) are known dietary sources of natural iodine, which, in excess, can be associated with thyroid overactivity. In addition to ...
Dangers Associated With the Use of Natural Products Containing Thyroid Hormones as Slimming ... always report the use of such dietary or herbal supplements as they perceive them as being safe.