The Fucus Extract XXI from Soria Natural is a 50 ml liquid dietary supplement made mainly from Fucus vesiculosus. This seaweed is known for its properties as a thyroid stimulant, remineralizing, and laxative, which can be beneficial for those looking to manage their weight or combat hypothyroidism. It is recommended for adults to take 25 drops dissolved in a little water, three times a day, and for children aged 5 to 12, half the adult dose. This product comes in a convenient format that facilitates daily consumption. Ingredients include dry extract and tincture of fucus thallus in vegetable glycerin.