Sprinkle directly into foods as an alternative to salt. May also be added to tea blends.

Use with caution if you have a thyroid condition..

Acrive Ingredients


North America

Bladderwrack, North America

Fucus vesiculosus

Bladderwrack is an edible seaweed also known as red fucus, black tang and rock weed. Although the plant is used in teas, it is not intended for long-term use due to a high iodine content. 

Bladderwrack is a source of natural iodine.

Culinary Companions
​Combine in moderation with acidic and savory foods to balance flavors in a dish.

What else you should know
Dried seaweed was the first source of iodine and alkalies needed to manufacture soap and glass, both of which were synthesized from the compounds sodium and potassium.

Bladderwrack is so-named because the plant contains tiny sacs that resemble
bladders. As with other species of brown algae, the cell walls of the plant contain a
high degree of alginic acid. Also known as algin, this polysaccharide bonds to water
moleculesto form a gelatinous material that is used in the food, cosmetic and textile

​Historically used in the British Isles as an alternative for manure and artificial
fertilizer for broccoli and potato crops, dried bladderwrack was sprinkled on the
ground or burnt and the ash used in the same way. Bladderwrack was also used
as a fuel and as a feed for cattle.

Bladderwrack Benefits
​Bladderwrack is a form of kelp that has been used medicinally for centuries. The main use of the herb has been for the stimulation of the thyroid gland as a treatment for obesity and cellulite. The high iodine content of the herb stimulates thyroid function which boosts metabolism.

​It has a reputation in the relief of rheumatism and rheumatoid arthritis and may be used both internally and as an external application for inflamed joints. The main phytotherapeutic use of Fucus is during debility and convalescence, and also to remineralise the body.

Fucus also appears to assist in the problem of lipid balance associated with obesity, and where obesity is associated with thyroid dysfunction, this herb may help to reduce excess weight.

Bladderwrack is rich in iodine, calcium, magnesium, potassium, sodium, sulfur, silicon and iron and high in some B-complex vitamins. It contains moderate amounts of phosphorus, selenium, manganese and zinc and small amounts of vitamins A, C, E and G. It also contains anti-sterility vitamin S as well as vitamin K. It is rich in algin and mannitol, carotene and zeaxantin with traces of bromine.

Suggested Properties
​Nourishing and soothing, stimulates the thyroid gland, anti-hypothyroid, thyroactive, anti-obesic, antirheumatic, demulcent, gentle metabolic stimulant, nutritive, adaptagen, thyroid tonic, anti-inflammatoryUses

A nourishing tonic. Obesity with tiredness and dry skin. Cellulite, chronic dry skin and stubborn constipation. Regular use delays the progress of arthritis and hardening of the arteries. A good tonic for old age. For children with slow mental and physical development.


May be added to bath and skin products.




Basil is a source of antioxidant and antibacterial compounds.

Mucilage, algin, mannitol, beta-carotene, zeaxanthin, iodine, bromine, potassium, volatile oils, and many other minerals

Part of Plant Used

Whole Plant

Dried, cut and sifted, powdered