Support the integrity of your veins and capillaries with Horse Chestnut Vein Strength(TM) from Planetary Herbals. Horse chestnut features saponins and flavones, which modern research has shown help support the normal integrity of the vascular system and connective tissues. Horse Chestnut Vein Strength combines a concentrated extract of horse chestnut with other herbs used to support the vascular system, including witch hazel, butcher's broom and ginkgo.