If you fish around the internet enough, you will find some anecdotal claims of insomnia and restlessness linked to excessive B12 intake, but direct causality has yet to be analyzed by experts
The mitochondrial acylome emerges: proteomics, regulation by sirtuins, and metabolic and disease implications
The method of any one of embodiments 118-137, wherein the composition comprises between about 0.0001% to about 20% by weight of the therapeutic agent, about 0.0001% to about 15% by weight of the therapeutic agent, about 0.0001% to about 10% by weight of the therapeutic agent, about 0.0001% to about 5% by weight of the therapeutic agent therapeutic agent, or about 0.0001% to about 1% by weight of the therapeutic agent
Aging Cell 20 , e13447 (2021)
I have been consistently able to exercise after a full day of work which was not happening prior to starting the shot