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This injection is often recommended for neuropathic pain, fatigue, and vitamin B12 deficiency

So I decided to take a deep dive into the evidence

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Broad phenotypic variability in patients with complex I deficiency due to mutations in NDUFS1 and NDUFV1

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Standard oral glutathione degrades in the stomach before reaching the bloodstream your digestive system breaks it down into its component amino acids, and most of the intended benefit never arrives