Timed-Release Stress Vitamin B Complex with Vitamin C 500 provides an excellent source of B Complex vitamins to help safeguard a sufficient daily intake.** The B Vitamins, which are essential for the maintenance of healthy nervous tissue, each play a role in energy metabolism in the body.** Choline and Inositol are essential components of cell walls and play important roles in cell growth and function.** The 500 mg of Vitamin C is added to help support immune function.** As an antioxidant, Vitamin C also helps to neutralize harmful free radicals in cells.** Adults can take one timed-release caplet daily.