Nature Made B12 1000mcg (400 ct.) is a convenient way to boost vitamin B12, an essential nutrient. Vitamin B12 keeps your nerve and blood cells healthy and helps to make DNA, or the genetic material found in all cells. In addition, vitamin B12 has been shown to help prevent megaloblastic anemia, a type of anemia that makes people tired and weak. Importantly, vitamin B12 plays a critical part in producing cellular energy, forming red blood cells and ensuring proper functioning of the nervous system. Not everyone absorbs enough B12 from their food. For example, individuals who follow vegan or vegetarian diets may benefit from Nature Made B12 1000mcg, since B12 is mostly found in animal products like chicken, milk, beef, eggs and fish. UPC: 031604041304 Weight: 0.69 lbs RKU: SAM729649