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While B12 injections are generally safe, side effects like redness, swelling, or pain can occur
Why Do I Feel Worse After My B12 Injection
Human benefit and side-effect rates are unknown
Discussion Effective interventional treatments are critically needed to address ever-increasing rates of global obesity and obesity-linked comorbidities
Non-medical usage, such as for immune boost, athletic preparation, or recovery, allows for personal choice in determining injection frequency, with some doctors suggesting a few vitamin B12 injections throughout the year
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