If I inject Cyanocobalamin it’s my understanding that it circulates in the blood serum until it gets utilized into cells. My question is what happens to the cyanide molecule ? When does that get taken off? Once it gets into the cell ? Or is it still attached in my bloodstream until it’s either excreted or enters a cell. I’d hate to think I have molecules of b12 with cyanide floating around . Hope I am making sense.