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Before initiating treatment, a comprehensive medical history review and consultation with a qualified healthcare provider remain essential steps
If youre administering a shot at home under a doctors guidance, following these steps is non-negotiable
By comparison, oral B12 supplements are absorbed at roughly 1 to 5% in healthy adults, and even less if you have low intrinsic factor, atrophic gastritis, celiac disease, Crohn's, or a history of gastric bypass
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