Cyanocobalamin is the most common form of cobalamins used in nutritional supplements and fortified foods
Report any unusual or persistent symptoms to your care team, and seek prompt medical attention for severe reactions such as difficulty breathing, chest pain, or signs of an allergic reaction
They are not intended for human consumption, clinical use, diagnostic use, therapeutic use, veterinary use, cosmetic use, or dietary supplement use
2018 Jan;147:141-152
Doctors use it for vitamin B deficiency states, peripheral neuropathy, neuritis, nerve pain related to diabetes or alcohol use, and as a supportive therapy during recovery where B1, B6, and B12 are needed