Airborne Effervescent Tablets provide real immune support in a great-tasting and fast-absorbing formula. Each serving (1 tablet) delivers a blast of 1000 mg of Vitamin C plus 13 other immune system supporting vitamins, minerals, and herbs, including Echinacea, ginger, and other herbal extracts from whole plant materials. Adults and children over 12 years old can simply drop 1 tablet in a glass of water or favorite beverage, let it dissolve (about 1 minute), and drink. Can be repeated every 3-4 hours as necessary, up to 3 times per day. Gluten-free and contains no preservatives.