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The NADH produced can interfere with the mitochondrial electron transfer system producing ROS [138,139]

How to Test for Functional Vitamin B12 Deficiency Many doctors mistakenly rely on serum B12 levels in the blood to test for vitamin

The ideal approach often combines both for maximum immune support

Can I continue my multivitamin or other supplements while on this injection

People with vitamin B12 deficiency may feel tired and lethargic and have decreased physical energy

One advantage of supplements is that your body doesn't need to have hydrochloric acid in the stomach to separate the B12 from the protein it's attached to, as it does for food