Complete Multivitamin with More Specialized Formula with More of What Matters to You Supports Physical Energy & Mental Alertness Formulated to Support: Physical Energywith high levels of B-Vitamins† to help convert food to fuel Mental Alertnesswith Caffeine Immune Healthwith Vitamins, C, A, Selenium and Zinc Bone Healthwith Calcium, Vitamin D and Magnesium †Refers to Vitamins B1, B2, B6, B12, Niacin, Folic Acid, Biotin and Pantothenic Acid A Complete Multivitamin That Supports Energy Being both physically and mentally active is important for supporting your healthy lifestyle. That's why One A Day Energy is a complete multivitamin with key nutrients, including B-Vitamins to help support physical energy by converting food to fuel, plus Caffeine to help support mental alertness.