vitamin b12 injection instructions Injections at Home - Safety Guide for Self-Administration how are b12 injections administered

Deficiency develops gradually, as the body stores approximately 2-5 mg of B12 in the liver, which can sustain normal function for several years even with inadequate intake or absorption

In emergency medicine training, dose discussions also make more sense when tied to route, indication, and timing rather than memorized in isolation

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Because B12 deficiency is an important symptom of anemia it seems likely the people who have raised the B12 intake will feel more energetic

Without intrinsic factor, no matter how B12-rich ones diet might be, the body cant utilise the nutrient, and a deficiency ensues