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Metformin is a diabetes medication that can also reduce the absorption of vitamin B12 and potentially reduce serum vitamin B12 levels
How often do I have to have a Vitamin B12 Injection
New red blood cells need vitamin B12 and folate (vitamin B9) to grow and develop
Even moderate alcohol consumption can decrease vitamin B12 absorption by about 5-6% Symptoms of Vitamin B12 Deficiency Historical records suggest that Grigori Rasputin suffered from a vitamin B12 deficiency
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