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Laboratory interference: Persistent unexplained elevation may reflect macro-B12 (immunoglobulin-bound B12) or other assay interferences
Some potential side effects of B12 injections include: Pain or swelling at the injection site Nausea Headaches Dizziness Anxiety Allergic reaction Remember that these side effects are rare and usually mild
It should not be purchased, possessed, or used for anything other than lawful research activities
Check the expiration date on unopened vials before use
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