Most of the healing virtues of Bladderwrack seem to derive from its iodine content, which stimulates the thyroid gland. In the 19th century, Bladderwrack was used to promote weight loss by boosting thyroid activity. Bladderwrack is often over a yard long. It is found on the Atlantic and Pacific coasts, and in the North Sea and the western Baltic. Because the amount of iodine in the plant is highly variable, its use is no longer recommended.
Allergic reactions are also a possibility.
No interactions have been reported. No harmful effects are known. How To Prepare Not recommended. Typical Dosage Not recommended. Overdosage Warning signs of excessive thyroid stimulation include thyroid enlargement, rapid heartbeat, palpitations, nervousness, agitation, increased sweating, fatigue, weakness, insomnia, increased appetite, and weight loss.