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While there are many reasons why someone could feel fatigued, B12 is a part of the picture and correcting the deficiency can greatly improve energy levels
B-12 also has an important role in forming new red blood cells and can cause an anemia if deficient
Stomach acid and a protein called intrinsic factor (IF) aid in B12 absorption
They do not share the drawbacks of cyanocobalamin, but seem to have significant benefits
Several factors influence discomfort
Here, B12 shots are given once a month
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