what are the side effects of having b12 injections injection : r/B12_Deficiency B12 Shots Side Effects And – what are the side effects

A lack of vitamin B12 can often lead to fatigue and weakness due to megaloblastic anemia a blood disorder that causes unusually large red blood cells (megaloblasts) and a lower red blood cell count, which results in a lower supply of oxygen to the body

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I'm pretty sensitive to the effects of things so am sure I'd know pronto if there was a problem

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