Fucus vesiculosus is an ocean seafood that has many cultural uses, including as an herbal remedy. Fucus vesiculosus is its scientific name, but it is known by many other names as well, including bladderwrack, black tang and bladder fucus. Although it has been used medicinally for centuries, studies proving its efficacy as an herbal remedy are lacking, according to the National Institutes of Health (NIH).
Geography
Fucus vesiculosus is found along the coasts of the Atlantic and Pacific Oceans near Europe and Asia. It typically grows alongside many other types of kelp and seaweed, including Ascophyllum nodosum, which is also sometimes referred to as bladderwrack because of their proximity to one another. In many Asian cultures, Fucus vesiculosus and other seaweeds are part of the human diet, used in soups, salads and in many other traditional dishes.
Medicinal Uses
In addition to its use as a food item, Fucus vesiculosus has been touted as an herbal remedy or alternative treatment for an array of medical conditions, among them hyperthyroidism, cancer and diabetes. It is also said to have anticoagulant, antibacterial, antifungal and antioxidant properties, according to the Memorial Sloan-Kettering Cancer Center.
Dosages
Supplements containing Fucus vesisulosus are available in many forms. Soft capsules and tablets can be purchased, as well as a liquid extract and topical applications such as patches. People taking capsules containing an alcohol extract can take 200 to 600 milligrams a day, according to the NIH. When taking tablets, the number consumed can gradually be increased to 24 tablets daily. When using the liquid extract directly, consume between 4 and 8 milliliters before a meal. A beverage can also be made by adding 16 g of bruised plant to a pint of water. The remaining solution can be administered in 2-ounce doses three times daily.
Side Effects
Although Fucus vesiculosus can be safely used as a supplement by many people, some side effects are possible. For example, some people have reported developing acne or a worsening of acne, according to the Huntsman Cancer Institute. And because bladderwrack can grow in waters contaminated with heavy metals, kidney and nerve damage are possible when used in large doses. Some people have also reported experiencing stomach pain, an increase in bowel movements, drooling and skin rashes.
Drug Interactions
Because of how Fucus vesiculosus works in the body, it may interact with certain prescription medications. The iodine content in the seaweed can interfere with medications to control the thyroid, according to the NIH. It may also lower blood sugar levels, so diabetics should use caution when taking bladderwrack. Finally, the plant may have anticoagulant properties that may lead to bleeding problems. For this reason, it should not be used by people who have bleeding disorders or who will be undergoing surgery or major dental work.
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