Horse Chestnut is known for its action on the venous system and is an ideal ally to fight heavy legs. Horse chestnut is a tree native to the Balkans, contrary to what its name might suggest. The seeds of this tree, also known as chestnuts, have a natural content of aescin and flavonoids. This composition gives chestnuts exceptional virtues, allowing them to tone up the venous system. By acting on venous return, it helps to limit circulatory discomfort and helps to keep your legs light.