Immune Defense is an advanced formula that contains a powerful combination of immune boosters such as Olive Leaf Extract, Pine Bark Extract, Bee Propolis and more. Zahler’s Immune Defense is highly beneficial in treating both viral and bacterial conditions and is effective against antibiotic-resistant bacteria. With potent ingredients that boost immunity and build crucial antibodies, it works effectively as a natural antihistamine and antioxidant, and provides the ultimate protection from prevalent infections and immune disorders.