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Always talk to your physician about the risks and benefits of any treatment
Side Effects, Risks & Regulatory Notes Most people tolerate vitamin B12 injections well, but injection-site soreness, transient swelling, or redness can occur
Why does needle size matter
An infection with Helicobacter pylori bacteria can also lead to lower B12 levels
Until such a study exists, claims of route superiority in either direction are extrapolation, not data
Eur J Cardiovasc Nurs
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