Immune System Supplement. Helps support your immune system. Blast of Vitamin C. Plus 13 vitamins, minerals & herbs. Add to your favorite beverage! Also try Airborne in other great flavors and formats. The original formula created by a school teacher. Gluten free. No preservatives. Airborne effervescent formula offers fast-acting absorption! Takes up to 3x per day. Contains no artificial flavors, colors or preservatives. 1 Effervescent Tablet = 1,000 mg of Vitamin C; High in antioxidants (Vitamins A, C & E); Excellent source of zinc & selenium; 350 mg of herbal blend including echinacea & ginger. Recyclable carton. Questions? Call 1-800-590-9794 or visit AirborneHealth.com. (This statement has not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.