is vitamin b12 injection prescription only Do You Need a for Injections? Do You Need A Prescription
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Wu G 1 , Zhang L, Li T, Zuniga A, Lopaschuk GD, Li L, Jacobs RL, Vance DE

The limited information from studies already conducted shows it could evoke mild fatigue

If you have persistent deficiency symptoms or anaemia, we may suggest testing

B., Andreassen, T

Higher doses (above 2mg/day) have not demonstrated proportional efficacy gains in published models and may increase copper ion toxicity risk

The condition differs from other forms of B12 deficiency because it stems from an autoimmune process attacking parietal cells rather than dietary insufficiency or malabsorption disorders
