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Bladderwrack (Fucus vesiculosis)
Also known as black tang, rockweed, and sea wrack, bladderwrack is native to the Atlantic coast, North Sea, and Baltic Sea. A type of brown seaweed, it attaches to rocks found in tidal regions. Bladderwrack is part of the Kelp family, so it possesses some similar properties as kelp and algin. Bladderwrack has been used to treat Arteriosclerosis and Iodine-deficiency ailments.
Bladderwrack is described as an alterative, a hypotensive, and a stimulant. In homeopathy, the plant is used to treat Obesity, scrofulosis, Arteriosclerosis, and hyperthyroidism (1). Bladderwrack was also shown to have antimitotic, antibacterial, and antifungal properties.
Part of the plant used: WHOLE PLANT.
The optimal and recommended dosage of bladderwrack is unknown.
Little information is available on the safety of bladderwrack. dosages exceeding 150 ?g daily may lead to hyperthyroidism, according to the German Commission E.
Bladderwrack may interact with anticoagulants such as warfarin, alkaloids, dopamine receptor agonists, and anorectic drugs such as fenfluramine. Avoid use with methotrimeprazine, a CNS depressant analgesic, and procarbazine antineoplastic drugs.
Excessive amounts of bladderwrack may block digestion and absorption of many drugs and fat-soluble vitamins.
1. Blumenthal, M (Ed.): The Complete German Commission E Monographs: Therapeutic Guide to Herbal Medicines. American Botanical Council. Austin, TX. 1998.