what does a b12 injection do for you injections Vitamin B12 Deficiency: Causes, Symptoms, and Treatment How Often Can I Take

They help keep B12 levels up, which supports the bodys functions

doi:10.1186/s12872-025-05186-6 Shaikh S, Hamza M, Neppala S, et al

Methylcobalamin is another form of vitamin B12 and it is my most recommended form

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Although routine B12 supplementation in patients on metformin therapy is not the standard of care (279), it is reasonable to monitor vitamin B12 levels in patients on metformin, particularly for individuals on long-term metformin (102

IgM in significant quantity can give you 'Thick Blood' [shocking term] because it increases the plasma viscosity, but that's another story