"In contrast, cyanocobalamin (CNCbl), a synthetic B12 compound used for food fortification and in some supplements, occurs only in trace amounts in human tissues as a result of cyanide intake from smoking or other sources." --> https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5312744/
the natural occurrence of cyanocobalamin is from clearing out of cyanide intoxication.
I suspect the tests for B12 cannot differentiate between the different forms, because Cyanocobalamin does "improve" B12 levels.
nephileon 0 points 7 months ago
Hydroxycobalamin is an antidote for cyanide poisoning, but Cyanocobalamin is not.
https://www.tandfonline.com/doi/abs/10.3109/15563650.2012.742197
"In contrast, cyanocobalamin (CNCbl), a synthetic B12 compound used for food fortification and in some supplements, occurs only in trace amounts in human tissues as a result of cyanide intake from smoking or other sources." --> https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5312744/
the natural occurrence of cyanocobalamin is from clearing out of cyanide intoxication.
I suspect the tests for B12 cannot differentiate between the different forms, because Cyanocobalamin does "improve" B12 levels.