American Health. One packet provides as much vitamin c as 10 oranges (food is the best source of nutrients, but supplements can help. Based on the USDA.gov nutrient database for 1 large, raw orange). 24 hour immune support. Unique vitamin C formula. B vitamins to support energy metabolism. Take once a day! No artificial sweeteners. The Ester-C Difference: Clinically studied to stay in white blood cells longer than regular Vitamin C. Unique formula with 24/7 immune support. Once a day is all you need. Taken once a day, Ester-C has your immune health covered. It supports circulation, is beneficial to joints and connective tissues, and is involved in collagen formation, which forms the basis of healthy skin. As a potent antioxidant, it helps fight free radicals. Free radicals can cause oxidative stress, which may lead to premature aging of metabolic cells. Ester-C also aids in the nutritional absorption of iron and works with other nutrients to promote overall health. Along with essential vitamins, such as B-6 and B-12 to support energy metabolism and vital electrolytes to aid in metabolic hydration, Ester-C effervescent formula has your immune support covered. Now more than ever, trust your immune health to Ester-C. The better Vitamin C. Ester-C Effervescent Vitamin C Packets offer 24-hour immune support in a delicious, natural Pomegranate flavored formula. Just take one packet daily with 4-6 fl. Oz. Of water and you are good to go! Unique Ester-C increases levels of Vitamin C in the body-getting into white blood cells (an important part of your immune system), and staying there longer than regular vitamin C. One serving daily of 1000 mg of Ester-C delivers 24-hour immune support and potent antioxidant activity 365 days a year.