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A simple test confirms whether you are actually deficient and rules out other causes before anything is injected
Do you have any symptoms
Oral B12 supplements require daily intake and have much lower bioavailability only about 1 to 2% is absorbed without intrinsic factor.
B12 supports the production of red blood cells, which carry oxygen throughout the body
Before we can explore this key question, we first need to delve a little deeper into the function of vitamin B12 and the different reasons people have for taking it
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