Two downstream consequences are mechanistically central: nicotinamide is preserved for re-entry into the NAD+ salvage pathway (raising intracellular NAD+ availability), and SAM is preserved for other methylation reactions
Risks and Possible Side Effects Vitamin B12 injections are generally very safe when administered appropriately
Those Experiencing Mood Issues: Vitamin B12 plays a role in brain health, so individuals dealing with mood swings, depression, or anxiety may find that B12 shots help improve their mental clarity and mood
Journal of Korean Medical Science, 25(5), 776-780
They are especially suitable for individuals needing ongoing, maintenance-level doses of B12
As we age, our bodies can become less efficient at absorbing vitamin B12 from food, increasing the risk of deficiency