can b12 injections cause nausea Vitamin Side Effects Vitamin B12 Side Effects Stomach:
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These injections can help with symptoms of anemia, which is caused by low red blood cell count

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B12 injections are not something to start and then continue indefinitely without review
If you have old vials, the worst likely outcome is reduced effectiveness rather than toxicity, but the economic waste and suboptimal results make using expired peptides a poor choice
