Cyanocobalamin Vitamin B12 Nasal Spray 500 mcg (4-Pack) (RX)Cyanocobalamin Nasal Spray is used to treat vitamin B12 deficiency, which is essential for nerve health, red blood cell production, and DNA synthesis. This method of administration is beneficial for individuals who have difficulty absorbing B12 from food. By delivering vitamin B12 directly through the nasal mucosa, it ensures efficient absorption into the bloodstream, helping prevent complications like anemia and neurological disorders related to B12