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Description
Understanding the real data behind B12 injections versus oral supplements is the first step toward making a smart health decision this spring

If you take medications long-term: ask whether periodic monitoring is appropriate

If you are deficient in vitamin B12, then the injections are very effective at raising your blood levels

PMID 10448523

Some patients might develop allergic reaction and present with symptoms of rashes, hives, swelling of lips, tongue and throat along with difficulty breathing, chest tightness due to inflamed airways
