At this point we can not find any strong evidence to change the B12. the UMCG did not keep in mind that the more B12 you consume at once the less it get’s processed by the body.
Cyanocobalamin can’t be absorbed by the body directly. It must first be broken down into the two bioactive coenzymes. There are four metabolic steps necessary for this process. These steps form a metabolic disadvantage, and on top of that, a part of the B12 gets discharged before it’s even converted. So in the end, an uptake of 140 mcg cyanocobalamin provides the body with only 2,76 mcg of cyanocobalamin.
If you are curious about the sources of these claims or if you want a bit more info you can read it here. https://jimmyjoy.com/blogs/jimmy-joy/why-is-there-so-much-vitamin-b12-in-jimmy-joy-plenny