By optimizing B12 levels, men can experience increased muscle mass, improved strength, and better recovery after workouts
Stimulants cause tolerance development, meaning increasing doses are needed for the same effect
Cyanocobalamin can lead to optic nerve damage (and possibly blindness) in people with Leber's disease
[DOI] [PubMed] [Google Scholar] 175.Smith BK, York DA, Bray GA
Vitamin B12 is essential for the healthy functioning of nerves, the production of red blood cells, and the overall health of the brain and spinal cord
Just make sure to avoid caffeine for at least an hour after taking supplements as it can inhibit efficient absorption of the vitamin