Fucus vesiculosus Cut thallus Iphym Herbalism

What is Fucus vesiculosus Thalle coupé Iphym Herboristerie used for?

Fucus vesiculosus, commonly known as kelp or bladderwrack, is a brown seaweed with multiple health benefits. Mainly harvested from the Atlantic and Pacific coasts, this seaweed is renowned for its high iodine, mineral and vitamin content. It is used in phytotherapy for its medicinal properties and its positive impact on metabolism.

Fucus vesiculosus is particularly renowned for its iodine content, a nutrient essential for thyroid hormone production. Regular consumption of bladderwrack thalli stimulates thyroid function, which can be beneficial for those suffering from iodine deficiency. By supporting healthy thyroid function, rockweed helps regulate metabolism, promoting better body weight management and increased energy. People with a slower metabolism may notice an improvement in vitality and a reduction in associated symptoms such as fatigue and weight gain.

Bladderwrack is also renowned for its appetite-suppressant properties, thanks to its high fiber content. These fibers swell on contact with water in the stomach, creating a sensation of satiety that helps reduce appetite and curb snacking cravings. What's more, the alginates in bladderwrack form a viscous gel that can slow the absorption of fats and carbohydrates, contributing to effective weight management. At the same time, these fibers promote good intestinal transit, preventing the constipation often associated with dieting.

Bladderwrack thalli also have notable anti-inflammatory and antioxidant properties. By neutralizing free radicals, bladderwrack helps protect the body's cells against oxidative stress, reducing inflammation and the risk of chronic disease. This action is reinforced by the presence of polyphenols and carotenoids, which play a key role in cell protection. These beneficial effects make it a precious ally for people suffering from joint pain or rheumatism.

Thanks to its polysaccharides, such as alginic acid, wrack is able to form a protective film on the gastric and esophageal mucosa. This makes it an excellent natural remedy for heartburn and ulcers. Taken after meals, wrack creates a mechanical barrier that prevents acid reflux, relieving symptoms of gastro-oesophageal reflux. This protective action is particularly useful for people suffering from gastritis or acid-related digestive disorders.

Fucus vesiculosus is also a valuable source of minerals such as calcium, iron and magnesium, as well as vitamins A, C, D and the B group. These nutrients play a crucial role in boosting the immune system, bone health and general vitality. In times of convalescence or chronic fatigue, bladderwrack can help restore energy and improve resistance to infection. The polysaccharides it contains, such as laminarin, have immunostimulant effects, supporting the body's natural defenses.

Bladderwrack can be used as a dietary supplement for a variety of indications, from weight management to thyroid health to digestive protection. Its versatility makes it a wise choice for those seeking a natural solution to many health problems. However, it is important to consult a health professional before starting any treatment with bladderwrack, especially in the case of existing pathologies.

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How to use this plant

To benefit from the properties of bladderwrack, we recommend a decoction of 2 g/liter of water, boiled for 5 minutes. Then drink up to 1 liter a day. Bladderwrack can also be used in dietary preparations or cosmetic baths. A three-week course of treatment with a 15-day break before resuming is ideal. For self-medication, do not exceed 10 consecutive weeks of treatment. Before starting, consult your doctor and have your thyroid hormones measured.

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Precautions for use

Fucus is not recommended during pregnancy or breast-feeding without medical advice. It is reserved for people over 18 years of age, and should not be used in cases of thyroid disease, antithyroid or anticoagulant medication, heart or kidney disease, or bipolar disorder. If you are taking medication, consult your doctor to avoid interactions. Rockweed should not be used as a substitute for a balanced and varied diet.

What does it contain?

Latin name: Fucus vesiculosus L.
Family: Fucaceae

Common names: Bladderwrack, bladder kelp

Part used: Thallus

Origin: Cold waters of the North Atlantic and Pacific Oceans

Active ingredients: Polyphenols with antibiotic activity, polysaccharides, mucilages, minerals, proteins, carotenoids, polyphenols, vitamins A, B1, B2, B6, B12, PP, C, D3, E, K and phytohormones.

Available at

100 g, 150 g, 250 g or 1 kg.