do b12 injections make you feel sick Feeling worse after Injection: Answering concerns B12 Shots at Home: How,

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After getting a B12 shot, you should watch out for these symptoms and see a doctor if you have: Strong pain where you got the shot Some stomach upset Feeling swollen Skin feeling itchy for a while In really rare cases, there might be more serious risks like: A severe allergic reaction called anaphylaxis Fluid build-up in the lungs Heart problems Blood clots in the bodys blood vessels A type of blood cancer, called polycythemia vera

In the last 25 years, several studies have tried to assess whether this could be replaced by oral supplementation

It definitely has given me more energy

Retrieved 7 February 2012

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