Generalized: Anaphylactic shock and death have been reported with administration of parenteral vitamin B12 (see WARNINGS)
Its FDA label specifies sterile water, but that is regulatory convention, not the gentler diluent
Summary: Various tests measure B12 status, including plasma B12, homocysteine, MMA and holoTC
For othersparticularly those with severe B12 deficiency or symptoms that have been present for a long timeit might take several days to a few weeks to experience noticeable improvement
Hal was extremely knowledgeable and precise in his recommendations, taking the time to explain everything in detail
Clean the injection site with alcohol, pinch the skin to create a fold of tissue, insert the needle at a 45-90 degree angle, inject slowly, and withdraw the needle