Metformin, commonly prescribed for diabetes, and proton pump inhibitors used for acid reflux can both reduce B12 absorption over time
The NHS symptoms list groups them into general anaemia symptoms (tiredness, breathlessness, headaches, loss of appetite, weight loss) and neurological signs (peripheral neuropathy, balance problems, depression, memory and concentration changes, sometimes mood changes or psychosis in advanced cases)
How B12 Injections Work B12 injections combat deficiency by delivering the vitamin directly into the bloodstream
This injection includes the longer acting B12 (Cyanocobalamin) for longevity of energy
Thats the core premise behind isolating this fragment in the first place