A deficiency in B12 can lead to a significant decrease in energy and exercise tolerance, along with fatigue
That slowdown signals metabolic adaptation, and that is when a second agent with a different mechanism provides the most benefit
[1] [2] When neurological symptoms are present such as paraesthesia, numbness, balance problems, or cognitive changesmore aggressive treatment is required
While intramuscular (IM) injections are widely used and generally safe when performed properly, even a small error in technique, needle placement, or injection site selection can lead to significant medical complications
These injections, usually containing hydroxocobalamin or cyanocobalamin, are administered intramuscularly, thus bypassing the digestive system where the absorption problem occurs