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Gastric bypass surgery : This surgery alters the digestive system, reducing the bodys ability to absorb B12 from food and supplements.For these individuals, methylcobalamin B12 injections provide a direct way to bypass the digestive system and restore essential B12 levels
Absorption of glutathione from the gastrointestinal tract is poor
& De la Fuente, M
Potential risks: Using these medications outside of studied and approved doses could lead to unintended consequences, and insurance may not cover off-label use
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Cellular energetics and metabolic adaptation American College of Cardiology (2016)
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