The Chestnut Extract XXI from Soria Natural is a liquid supplement with 450 mg of lyophilized extract per 50 ml. It is known for its properties as a venous tonic, vasoconstrictor, and astringent. It also has anti-inflammatory effects, aiding in improving blood circulation back to the heart and reducing edema. It is recommended to take 25 drops with some water three times a day. Contains 3.48 mg of alpha-cyclodextrins to enhance the absorption of its active components.