Tag: Adenosylcobalamin

While cyanocobalamin has long been the most common form of B12 in supplements due to its stability, it is a synthetic molecule. Several forms of vitamin B12 exist that do not contain cyanocobalamin, providing natural and active alternatives for supplementation.

Worldwide, vitamin B12 deficiency prevalence ranges from 2.5% to 60%, varying significantly by age and ethnicity [1.5.1, 1.5.2]. Understanding **what is the purest form of vitamin B12** is crucial for effective supplementation and correcting this common nutritional gap.

Methylcobalamin, adenosylcobalamin, and hydroxocobalamin are the natural, non-synthetic forms of vitamin B12 found in food and used in supplements, while cyanocobalamin is the synthetic version. Understanding the differences is crucial for choosing a supplement, especially for individuals on vegan or vegetarian diets.