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Vitamin B12 has a very low risk of toxicity, so there's really no upper limit to how much you can take without harm
Older adults
However, in very rare cases, some people can experience side effects caused by allergic reactions or sensitivity ( If you experience any side effects, speak with your doctor
First, Gather Your Supplies Before you do anything else, lay out all your supplies on a clean surface
What are B12 injections
Preparing the injection site involves the following steps: Select a clean, well-lit area for the injection site
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