Nature's Way's standardized Horse Chestnut is a scientifically advanced herbal extract standardized to 20% Aescin and supported by the whole Calendula flower. Usage: The Aescin in Horse Chestnut is a powerful saponin that has been shown to support healthy circulation, especially in the legs. Aescin promotes healthy tone to the veins of the lower extremities. Recommended Daily Dosage: Take one capsule two times daily with water at mealtimes. 90 CAPS