Common B12 deficiency symptoms include fatigue, anxiety, depression, poor memory, confusion, brain fog, tingling or numbness in the extremities, zings or zapping feelings in the extremities, anemia, shortness of breath, muscle weakness, irritability, tender calves, pale complexion and more
Potential Side Effects: Be aware of potential side effects associated with specific peptides
Food and Drug Administration) Dietary deficiency of vitamin B 12 occurring in strict vegetarians and in their breastfed infants (isolated vitamin B 12 deficiency is very rare) Malabsorption of vitamin B 12 resulting from damage to the stomach, where intrinsic factor is secreted, or damage to the ileum, where intrinsic factor facilitates vitamin B 12 absorption
If you dont notice any improvement and you were not deficient to begin with, it could mean your vitamin levels were adequate and the injection is simply maintaining that status