Ester-C Effervescent Vitamin C Packets offers high levels of Vitamin C in the body and plays an important part of your immune system. It also reduce the premature aging of cells, and forms the basis for healthy skin. As a powerful antioxidant it neutralize free radicals, and works with other nutrients to promote overall health. This product also contains essential vitamins, such as B-6 and B-12 to support energy metabolism and vital electrolytes to aid in metabolic hydration.