Give your immune system a boost with ester-c 1000 mg orange effervescent powder. Our patented formula enhances your body’s absorption of vitamin c by white blood cells, giving you an added defense against free radicals. It’s 24-hour support to keep you healthy 365 days a year. Vegetarian and gluten-free. Plus, its non-gmo with no artificial sweeteners or flavors. See nutritional facts panel for allergens. Includes one 21-packet box of ester-c 1000 mg orange effervescent powder. Immune health never goes on vacation. Trust ester-c for 24-hour immune support, any time of the year. Since it works biologically like other forms of vitamin c, ester-c provides you with potent antioxidant support along with all the benefits of traditional vitamin c, while remaining gentle on the stomach.