l glutathione walmart Healthy Origins Setria L-Glutathione Reduced - 500 Mg Glutathione Reduced 500 mg Antioxidant

My understanding is that this should be done routinely, especially if you're on B12 in high doses, but most GP's don't know this and don't do it

Park JM, et al

Mol Immunol

What Is Glutathione & Why Athletes Burn Through It Your body produces something called glutathione a powerful tripeptide made from three amino acids: glycine, cysteine, and glutamic acid

Functions as a for metabolic reaction required for synthesis of purines and pyrimidines: co-enzyme The reaction depends on methyl cobalamin as a co-factor and is also dependent on folate, in which the methyl group of methyltetrahydrofolate is transferred to homocysteine to form methionine and tetrahydrofolate