2nd October 2019

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9

What does b12 do in the body?

Vitamin B12 is a nutrient that helps keep the body's nerve and blood cells healthy and helps make DNA, the genetic material in all cells. Vitamin B12 also helps prevent a type of anemia called megaloblastic anemia that makes people tired and weak. Two steps are required for the body to absorb vitamin B12 from food.

What are side effects of b12 injections?

Less serious side effects may include:
  • headache, dizziness, weakness;
  • nausea, upset stomach, diarrhea;
  • numbness or tingling;
  • pain, swelling, redness, or irritation where the injection was given;
  • fever;
  • joint pain; or.
  • itching or rash.
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