Cyanocobalamin is a synthetic form of Vitamin B12. It is commonly used in supplements and fortified foods. This form of Vitamin B12 is stabilized with cyanide, making it more durable. However, hydroxocobalamin is a more effective form of Vitamin B12 for treating deficiencies. Cyanocobalamin is made through bacterial fermentation and is easy to produce. It comes in different forms like powder or crystals. It is not found naturally in food due to the cyanide content. Cyanocobalamin is soluble in water and alcohol but not in chloroform, acetone, or ether. It is sensitive to light. It is available in tablet, nasal spray, and injection forms, with a methylcobalamin option also available.