do vitamin b12 injections work shots: Uses, benefits, and side effects Benefits of Taking Vitamin B12

doi: 10.1016/s0140-6736(63)91500-9

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If you shot you plan to give your dog does not fall into this category, then you must take them to the vet

doi: 10.1126/science.1123965

Common side effects that you may experience include tenderness at the injection site, upset stomach and lethargy

Be aware of these potential reactions and consult your healthcare provider if you experience any unusual symptoms