B-12 is most commonly known for its role in the normal development and regeneration of red blood cells. Red blood cells help deliver oxygen throughout the body. B-12 is part of a triad of vitamins— along with Folic Acid and Vitamin B-6 — that support heart health. Vitamin B-12 is also an important contributor to nervous system health, and helps maintain proper metabolic functioning. These tablets are designed to release Vitamin B-12 in your body over a prolonged period of time, so you can continue to benefit throughout the day.