With Alpha Lipoic Acid and CoQ10. Supports Healthy Nervous System. Delayed-Release Capsules. B-Complex Vitamins are needed by the body for energy production, synthesis of blood cells, healthy nervous system function, and countless other metabolic processes. The forms of the B Vitamins found in foods and most supplements, however, require conversion into their active forms before they can perform their functions as co-factors in biochemical reactions. NOW Co-Enzyme B-Complex contains B Vitamins in their active or Co-enzyme forms and the capsules are acid-resistant to deliver them to intestinal absorption sites intact, unharmed by stomach acids.