For competitive athletes, the World Anti-Doping Agency's "Non-Approved Substances" category (S0) can apply to compounds not approved for human use even where not individually listed
Red blood cells carry oxygen to the brain and other organs, causing a lack of energy and depression without them
If your levels are already healthy, adding more B12 will not speed up fat loss, because your body simply clears the excess
Retrieved from Millennium Physicians
Serious Reactions That Require Medical Attention Whilst most reactions to B12 injections are mild, certain symptoms indicate potentially serious complications requiring prompt medical assessment
For people who are low in B12, yes, many feel a real lift in energy once their levels come back up