The most common is slight redness, swelling, or tenderness at the injection site, which usually resolves quickly
Supplements: Which is Right for You
think pretty: Vitamin B Complex This is your full-spectrum energy and nervous system support when one vitamin just isnt enough
These are research questions, not proven benefits for people
If the patient is suspected to be sensitive to cobalt or other components of cobalamin, an intradermal test dose is recommended.[12][15] Several laboratory tests should be performed prior to treatment with cyanocobalamin, including serum vitamin B12, folate, iron, hematocrit, and reticulocyte count