Swisse Ultiboost High Strength Vitamin B12 is a premium quality formula to help support energy and red blood cell production, brain and cognitive function, plus immune system health. Energy Production: Vitamin B12 supports energy production and the metabolism of fats, carbohydrates and protein. It also contributes to the reduction of tiredness and fatigue. Red Blood Cell Health: Vitamin B12 assists red blood cell production and health. Brain Health: Vitamin B12 supports brain, nervous system and cognitive function to maintain mental recall and concentration. Immune Health: Vitamin B12 supports healthy immune system function. DNA Production: DNA contains our genetic information for the development and function of all cells. Vitamin B12 supports DNA synthesis and production. Individual Needs: Vegans and vegetarians (or those with limited meat and dairy intake) plus the elderly, may have increased needs for vitamin B12 supplementation.