Windmill® Zinc Lozenges with Vitamin C provides a natural remedy to boost immune functions and fight inflammation. Zinc Citrate is an essential trace mineral and a factor in the maintenance of good health.† Vitamin C is a powerful antioxidant shown to strengthen the body's natural defenses.† Available in a delicious Honey Lemon flavor lozenge. Antioxidant Support Immune System Support† For additional formula information, view the Supplement Facts panel. All Windmill supplements are manufactured in the United States in an FDA-inspected facility whose cGMP (current Good Manufacturing Practice) are independently verified by qualified certification organizations. Free of artificial colors, flavors and preservatives, Windmill is a trusted name that has been providing America with quality supplements for over 45 years. Gluten Free.