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"Glutamine and glutamate: Nonessential or essential amino acids?"

The case for boosting glutathione and related enzymes Glutathione assumes many roles, and its depletion is observed in aging and many chronic diseases [4-6]

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Efficacy of supplementation with methylcobalamin and cyancobalamin in maintaining the level of serum holotranscobalamin in a group of plantbased diet (vegan) adults. Experimental and Therapeutic Medicine 22(3) (2021): 17

Routine laboratory monitoring typically includes renal function, particularly during dose titration, and periodic assessment of pancreatic enzymes if abdominal symptoms develop