Your body requires vitamin B-12 to convert carbohydrates into energy. Vitamin B-12, or cobalamin, is one of eight B vitamins that ensure you have a healthy liver, eyes, nerve cells and immune system. There are different forms of vitamin B-12 available, which may make it confusing when selecting a type for supplementation.
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Methylcobalamin Vs. Cyanocobalamin
Fred Bloem, M.D., a holistic physician in Maryland, states that methylcobalamin is a more bio-available form of vitamin B-12, while cyanocobalamin is cheaper. Your body must convert cyanocobalamin to methylcobalamin. A small amount of cyanide is released during the conversion process, but this isn't a concern if you are healthy, according to Dr. Bloem. Only smokers or those with kidney failure might need to opt for methylcobalamin.