You cannot overdose on vitamin B12 because any excess you simply pee out. If you get b12 shots, you may experience side effects like dizziness, nausea, and fatigue. It is possible to have elevated ...

Vitamin B12 deficiency symptoms include canker sores, a swollen tongue, and fatigue. B12 deficiency is often caused by veganism, Crohn's disease, or pernicious anemia. To treat vitamin B12 ...

One notable exception to this general rule is Vitamin B12. Though it is water-soluble, it is primarily present in animal-based foods such as meat, eggs, dairy products and mushrooms. As a result, pure ...