Elderberry is harvested from the Sambucus nigra tree and has a long history of use. Brauer’s Black Elderberry Cold & Flu Forte Double Strength contains Elderberry (Sambucus nigra) which is traditionally used in Western herbal medicine to relieve symptoms of a common cold and mild upper respiratory tract infections. Brauer’s Black Elderberry Cold & Flu Forte Double Strength also contains: Wellmune®: • To support immune system health & function Ivy leaf (Hedera helix): • To relieve cough • Is an expectorant to clear respiratory tract mucous