Super Concentrated Black Elderberry extract rich in immune supporting flavonoids especially anthocyanins. An age old cold & flu relief in a great tasting natural berry flavor syrup.Supports Immunity†Digestive Health†Natural Diuretic†All Windmill supplements are manufactured in the United States in an FDA-inspected facility whose cGMP (current Good Manufacturing Practice) are independently verified by qualified certification organizations.Free of artificial colors flavors and preservatives Windmill is a trusted name that has been providing America with quality supplements for over 45 years.