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If you are experiencing several of the signs listed below, it is worth having a private blood test to check your B12 levels before assuming deficiency is the cause
Anaphylactic reaction after injection of vitamin B12 Heres a case of two female patients with pernicious anemia who had adverse reactions to B12 shots (hydroxocobalamin)
Without enough vitamin B12, the body may struggle to produce healthy red blood cells and maintain normal nerve function
That's how real progress is made
The National Academies Press
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