Madeleine Mumcuoglu, an Israeli scientist, developed a syrup made from elderberries that has been shown in clinical tests to prevent and treat influenza. Sambucol syrup and lozenges are sold in health food stores, as is a similar elderberry syrup from the Sambu International Cleansing Program (see appendix for sources).
Elder blossoms are a popular ingredient in herbal cough drops such as Ricola lozenges from Switzerland.
