vitamin b12 injections dosage Cobalamin (vitamin B12) and Folate Deficiency B12 Shots at Home: How,
Description
This is normal

The common side effects of B12 shots include pain at the injection site, mild swelling, and temporary redness

After ingestion, stomach acid separates B12 from food proteins, and then intrinsic factor produced in the stomach lining binds to B12 so it can be absorbed in the ileum (the final section of the small intestine)

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