When life gets busy and your energy dips, Vitamin B12 helps support you from the inside out. This essential nutrient supports energy levels and energy production, helping relieve weariness, tiredness, fatigue, and feelings of weakness when dietary intake is inadequate. Vitamin B12 also assists healthy red blood cell production and supports red blood cell and blood health—important for vitality and daily wellbeing. It supports healthy immune system function, helps glucose and carbohydrate metabolism, and plays a role in maintaining cognitive and nervous system health and function when dietary intake is inadequate.