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This article explains why glutamine is important and discusses the benefits and safety of glutamine supplements

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S., Garzon, S., Casarin, J., Franchi, M., & Ghezzi, F

To help bypass any barriers to absorption in the GI tract, many healthcare providers recommend B12 injections for deficiency, but research shows that very high doses of oral B12 (1,000 to 2,000 mcg once a day) can normalize serum B12 levels to a similar extent with minimal side effects

It enhances the production of collagen peptides

Antioxidantrich Coffee Reduces DNA Damage, Elevates Glutathione Status and Contributes to Weight Control: Results from an Intervention Study - Bakuradze - 2011 - Molecular Nutrition &amp