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The dorsogluteal site has been phased out of current guidance because of its proximity to the sciatic nerve and superior gluteal artery
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If symptoms return before the next planned injection, seek clinical advice instead of changing the schedule yourself
Common side effects include, but may not be limited to: pain or redness at the injection site mild diarrhea pruritus (itching) increased swelling joint pain dizziness headache nervousness or anxiety Serious side effects may include: allergic reactions peripheral vascular thrombosis hypokalemia (low potassium levels) pulmonary edema (fluid build-up around or in the lungs) thrombocytosis congestive heart failure There have been reports of anaphylactic shock and death after the parenteral administration of vitamin B12
If this occurs, seek emergency care immediately at a local emergency department or by calling 911
Cyanocobalamin injection: Uses, side effects & warnings
