Vitamin B12 is primarily involved in the production of red blood cells, the maintenance of a healthy nervous system, including brain function, and releasing energy from food
Infinite k cat values were also reported for human dithiol glutaredoxins as well as poplar GrxS12 and are presumably a common feature of enzymatically active glutaredoxins 2,10,20,21 and glutathione-dependent hydroperoxidases 33,51
The clinical evidence on tesamorelin, the most rigorously studied secretagogue in randomised trial data, demonstrates good tolerability across multi-month trials with no clinically significant effects on glucose homeostasis (Gianotti et al
Hormonal Regulation : Enhancing processes like metabolism and growth hormone production
Honda Y, et al
So, its assumed that acetyl-L-carnitine may have a similar role because our bodies can convert L-carnitine to acetyl-L-carnitine and vice versa, but further research must be held to confirm this assumption