ELDERBERRY AND ZINC LOZENGES support and boost the immune system. Echinacea, Bee Propolis, and Slippery Elm have been added to complement this unique formula. These lozenges are recommended by healthcare practitioners. Black Elderberry has some value in treating influenza and appears to have antioxidant properties. Echinacea is effective in shortening the duration of symptoms in the upper respiratory tract. Bee Propolus is an immune system booster and strengthener. Zinc is used in the treatment for the common cold.