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Common examples include fatigue or low energy with normal blood results, brain fog or reduced concentration without confirmed vitamin B12 deficiency, stress-related exhaustion or burnout, increased metabolic demand such as during illness recovery, high workload, or intense training, restrictive or inconsistent dietary intake, or suspected poor oral absorption despite normal serum levels
Below is a table comparing them: Clinical Evidence for Ranitidine-B12 Interactions Research on ranitidine and vitamin B12 shows mixed results
It is not intended for diagnostic, therapeutic, or clinical applications
Vitamin B12 Deficiency Can Be Sneaky and Harmful
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