Sambucol Immune System Lozenges are a special formulation of the award winning black elderberry extract developed by world-renowned virologist, Dr. Madeleine Mumcuoglu. Each pleasant tasting lozenge also contains echinacea, vitamin C and zinc. All are well documented for their health promoting benefits. Sambucol is the world's best selling and most extensively researched black elderberry extract and is produced with a patented process which uniquely isolates the key active constituent of elderberries. Usage Sambucol Immune System Formula Lozenges support your natural defenses, and are especially popular during the winter season. *Recommended Daily Dosage Adults take 1 lozenge four times a day. Children under 12: take 1 lozenge two times a day. 4 OZ