Vitamin B12 is an important nutrient within the body, contributing to the maintenance of normal immune system, nervous system and psychological function, normal energy-yielding and homocysteine metabolism, and the reduction of tiredness and fatigue. Lindens Vitamin B12 250µg Tablets are potent, providing 10,000% NRV (Nutrient Reference Value) of Vitamin B12 per tablet. Vitamin B12 contributes to normal: energy-yielding metabolism nervous system function homocysteine metabolism psychological function red blood cell formation immune system function reduction of tiredness and fatigue has a role in the process of cell division . With Lindens, you can expect: An established UK manufacturer based in Yorkshire ISO 9001 Certified for Quality Management Systems Dedication to excellence, innovation and satisfaction Resealable, light-proof, foil-fresh pouch packaging The Lindens label: your guarantee of authenticity