sore arm after b12 injection How to self-inject intramuscular vitamin - Overview Is intense whole arm pain

However, please note that your specific dosage and frequency may vary based on individual factors such as your health condition, desired goals, and individual response to treatment

Some people assume that doubling up on shots will double their results

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Because B12 is water-soluble, it poses a very low toxicity risk

Key B12 Injection should be used exactly as prescribed by the doctor

This is informed speculation, not proven protocol