Elderberry has an extensive history of being used during seasonal immune challenges. Black Elderberry (Sambucus Nigra) is unique in providing both antioxidant and immune support due to its natural concentration of anthocyanins and other flavonoids.
In fall and winter months I take daily Elderberry to ward off viral infections coupled with zinc, quercetin and niacin. Gaia has always been top quality and seems most effective I have used.