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Useful under medical supervision: It is helpful when oral supplements are not enough or when faster correction is required

Strict vegetarians, vegans or people with an unbalanced diet can also expect vitamin B12 deficiency

Increased Energy and Reduced Fatigue One of the main reasons people turn to B12 complex injections is for the energy boost they provide

It helps with memory and deficiencies that are linked to depression

Those Looking for Enhanced Wellness : Some people without a clinical B12 deficiency choose B12 injections for an energy boost or to improve their metabolism, though this use is less medically established