Cyanocobalamin is a synthetic form of vitamin B12, an essential nutrient that plays a crucial role in the production of red blood cells and the maintenance of the nervous system. It is commonly found in animal products, but many people, especially vegetarians and vegans, may require supplements to meet their daily needs. This vitamin is important for DNA synthesis and energy metabolism. A deficiency in cyanocobalamin can lead to anemia, fatigue, and neurological issues. It is often used in dietary supplements and fortified foods to help individuals maintain adequate levels of vitamin B12 in their diets.