The most common is slight redness, swelling, or tenderness at the injection site, which usually resolves quickly
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
In 1972 I was told I had two years to live unless I ate raw liver three times a day or B12 injections every month - I chose to have the injections 46 years on
Supplements: Which is Right for You
Learn more Diagnostic Testing Inflammatory markers, hormonal imbalances, and nutritional deficiencies that accelerate joint degeneration