Nature Made Cranberry with Vitamin C has vitamin C that helps support the immune system. Cranberry fruit comes from small evergreen shrubs that produce the tart berries. Vitamin C is a water soluble vitamin with antioxidant properties that helps neutralize free radicals in the body and helps to support the immune system. Nature Made Cranberry with Vitamin C is guaranteed to meet our high quality standards—it is made from carefully selected ingredients under strict manufacturing processes.