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Fucus is a seaweed widespread in cold and temperate climates. Its full name is Fucus vesiculosus, but it is also commonly known by the names of Sea Oak, Black Tip and Alga Kep. The fucus belongs to the Fucaceae family and to the brown algae genus. It has a stem about two meters high and double-branched laminae called thalli which have swellings full of gelatinous substances, called conceptacles. These represent the reproductive system of the seaweed which reproduces quietly in cold climates, while it becomes sterile in hot ones. The fucus is native to the British and Atlantic islands of Northern Europe and America. This alga can also be cultivated. The cultivation, unlike the common agricultural species, takes place in the seabed and not in the fields. The seabed for the cultivation of fucus seaweed must be sandy and shallow in order to prevent its propagation, which is driven by throwing large stones into the sea. These create spaces devoid of vegetation, useful for facilitating the collection and cutting of the fucus. The seaweed is mowed every two years. The fucus survives out of water for only 5 hours.


Fucus is an algae widely used in herbal medicine for its recognized medicinal properties that make it useful in cases of obesity, diabetes, intestinal disorders and poor thyroid function. Its beneficial effects are due to the presence of substances such as mucopolysaccharides, among which alginic acid, iodine, bromine, beta-carotene, mineral salts and vitamin C. The main property of the alga is relative to the stimulation of the basal metabolism, due to the presence of iodine, both in protein and inorganic form. Iodine stimulates the energy consumption of the mitochondria of the cells, leading to an acceleration of the metabolism and the consequent reduction of problems resulting from poor thyroid function, such as obesity or common excess weight. For these characteristics, fucus is also used as an adjuvant in diets aimed at slimming. In fact, it allows you to eat less, thanks to the induction of a sense of satiety. Alginic acid is also beneficial for disorders, such as gastritis and gastroesophageal reflux, which lead to damage to the mucous membrane of the stomach. The derivatives of algin, in fact, contain protective gels for the mucosa of the same which is shielded from the harmful action of gastric juices altered by the disease. Fucus has also been shown to lower glycemic indices, which are useful for diabetic subjects. Fucus can also work as an excellent iodine supplement, especially for individuals who are particularly deficient in this substance and who, precisely because of this deficiency, are prone to develop serious thyroid pathologies such as hypothyroidism or goiter. Fucus also has laxative effects that can be used in case of constipation.


The uses of fucus are many, in herbal medicine, dietetics, nutrition, cosmetics and industry in general. As a food supplement it is produced in tablets. The recommended dose is one tablet twice a day, in the morning and in the afternoon. Fucus tablets are a herbal product called a food supplement and are used to assist in low-calorie diets or to relieve ailments such as gastritis. But not only that, the fucus is also used in cosmetics to make slimming and anti-cellulite creams based on its extracts. In the food industry, fucus is used to produce thickeners to add to ice creams, cheeses and puddings. The textile industry also uses it to obtain dyes for fabrics. The alginic acid extracted from fucus is also used to process textile fibers, to produce plastic, rubber and gel. But not only that, the fucus seaweed is also used as forage and fertilizer in organic farming. The intake of remedies based on fucus extracts should be avoided in case of pregnancy and breastfeeding and in case of hypethyroidism, that is, excessive thyroid functioning.

Fucus: Products

Products based on fucus can now be found everywhere: from the web, to the herbalist's shop under the house, to the pharmacy and parapharmacy. As a food supplement it is sold in the form of tablets. A medium-sized pack of 60 pills costs around 7 euros, although price differences can be found depending on the manufacturer. As a cosmetic product, fucus extracts are sold in the form of body cream to be used in case of cellulite and to be applied on the parts of the body that are at risk of being affected by the blemish (buttocks, thighs and hips). A 500 ml pack of fucus-based cream costs around 20 euros. These products, however, are not intended as miraculous remedies, but as an aid to a healthy and balanced lifestyle.

Video: I-Fucus из морской водоросли Фукус