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Vitamin B12 shots are typically given intramuscularlymeaning the injection is delivered directly into a muscle, most often in the upper arm (deltoid), thigh, or buttock
Still, high doses could have some side effects, like dizziness, headache, anxiety, nausea, and vomiting
This is followed by the metabolism of homocysteine via one of two pathways: remethylation to methionine or trans-sulfuration via the cystathionine-synthase enzyme
Conditions such as Crohns disease or Celiac disease can inflame the gut lining, making it difficult for the small intestine to absorb B12 efficiently
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