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Further, long-term use of acid-reducing drugs and the anti-diabetes drug metformin and repeated exposure to nitrous oxide have been implicated in vitamin B 12 deficiency (see Drug interactions)
When the body has a good supply of red blood cells and is working as it should there is enough energy to fight off infections
Low B12 causes fatigue, so correcting it gives deficient people more energy to stay active
**Increased Energy Levels:** Uncover the secrets behind heightened cellular energy, making you feel more alive and invigorated
If you're a vegetarian who eats dairy, you can probably get enough B12 from eggs, milk, and other dairy products
If youre feeling tired, have nerve problems, or notice other symptoms, see a doctor
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