Circulation Support for Heavy and Tired Legs Just One Tablet Per Day With Extracts of Grape Seed, Maritime Pine Bark and Magnesium With Botanicals No Dairy No Gluten Nutrition No Gmo Dietary Supplement Grape Seed Grape seed and maritime pine bark naturally contain antioxidants that are called proanthocyanins. They are known and used in herbal medicine to help support venous circulation and blood vessel health. Healthy Legs Active Legs Strong combines grape seed extract, maritime pine bark extract and magnesium to support vein and blood vessel health, normal blood circulation and muscle function. Active Legs" Strong only uses ingredients that have been scientifically researched for their leg health supporting effect.