Vital for Healthy Cells: Vitamin B-12 is essential for the production of healthy nerves and blood cells. Healthy blood cells help remove carbon dioxide and other toxins from your body Product Note: Exposure to heat or sunlight may melt/damage the product. Thus customers are expected to be available during product delivery BOOSTS ENERGY: The active ingredients in Natrol Vitamin B-12 deliver high potency B-12 throughout the body's energy pathways to support energy production SUPPORTS A HEALTHY NERVOUS SYSTEM: Quick-Dissolve B-12 Tablets 5000mcg B-12 in Natrol B-12 provides support for healthy blood cells and contributes to the overall health of the nervous system