Zahler Zinc+Elderberry Lozenges is a bioactive Zinc supplement which provides 25 mg of Zinc along with Elderberry in a great-tasting elderberry-flavored chewable lozenge. Zinc is a trace mineral essential for many bodily functions and processes including proper growth and immune function. It is also an antioxidant, meaning it helps protect healthy cells from the potentially damaging effects of free radicals. Elderberry is long-known for its immune-boosting and antioxidant properties.