Elderberry provides a powerful immune system defense and increases the number of white blood cells, especially at the start of an immune system challenge. This is the year-round support your body needs to stay healthy during the winter season for the whole family. It has 3.5 times the antioxidant power of vitamin E and is extremely high in vitamin C. Black elderberry has been shown to reduce the severity and length of influenza. Another added benefit is that it is great for quieting a cough and soothing a sore or scratchy throat when under the weather. For long-lasting cough relief, consider the quiet coughing capability of elderberry.