use of an elimination diet to determine which foods or fluids may contribute to symptoms
& Susumu, G
But are there side effects with glutathione supplementation
Vitamin C also plays an important role in regenerating glutathione to enhance and extend its functions

Diabetologia 60(9):1601-11 2017 PMC5709233 Mercader JM, Liao RG, Bell AD, Dymek Z, Estrada K, Tukiainen T, Huerta-Chagoya A, Moreno-Macias H, Jablonski KA, Hanson RL, Walford GA, Moran I, Chen L, Agarwala V, Ordonez-Sanchez ML, Rodriguez-Guillen R, Rodriguez-Torres M, Segura-Kato Y, Garcia-Ortiz H, Centeno-Cruz F, Barajas-Olmos F, Caulkins L, Puppala S, Fontanillas P, Williams AL, Bonas-Guarch S, Hartl C, Ripke S, Diabetes Prevention Program Research Group, Tooley K, Lane J, Zerrweck C, Martinez-Hernandez A, Cordova EJ, Mendoza-Caamal E, Contreras-Cubas C, Gonzalez-Villalpando ME, Cruz-Bautista I, Munoz-Hernandez L, Gomez-Velasco D, Alvirde U, Henderson BE, Wilkens LR, Le Marchand L, Arellano-Campos O, Riba L, Harden M, Broad Genomics P, Gabriel S, T2D Genetics Consortium, Abboud HE, Cortes ML, Revilla-Monsalve C, Islas-Andrade S, Soberon X, Curran JE, Jenkinson CP, DeFronzo RA, Lehman DM, Hanis CL, Bell GI, Boehnke M, Blangero J, Duggirala R, Saxena R, MacArthur D, Ferrer J, McCarroll SA, Torrents D, Knowler WC, Baier LJ, Burtt N, Gonzalez-Villalpando C, Haiman CA, Aguilar-Salinas CA, Tusie-Luna T, Flannick J, Jacobs SBR, Orozco L, Altshuler D, Florez JC, SIGMA T2D Genetics Consortium

Characterization of the human prolyl 4-hydroxylases that modify the hypoxia-inducible factor