Stage One. In the first stage of the Schilling test, a person swallowed radiolabeled vitamin B12A (vitamin B12 joined with a radioactive substance). An hour later, they would receive an injection ...

Hydroxocobalamin, or vitamin B12a, is a dietary supplement found in food and used to treat deficiencies in vitamin B12. Cyanocobalamin, on the other hand, is the synthetic form of vitamin B12 ...

Our bodies require a variety of vitamins to maintain optimal health and perform essential functions. Vitamins are needed in small quantities, and most individuals obtain all the necessary ...