Opitac is a pharmaceutical-grade, reduced L-glutathione manufactured by KOHJIN Life Sciences in Japan under strict quality standards
However, the mice that were fed the BPA rich diet together with the methyl rich diet, did not show the phenotypic expression of the Agouti gene as these mice were small, not overweight, with brown fur

aqua/water/eau, glycerin, alcohol denat., niacinamide, ascorbyl glucoside, cyclohexasiloxane, zeolite, bellis perennis (daisy) flower extract, xanthan gum, styrene/ acrylates copolymer, phenoxyethanol, sodium hydroxide, dimethicone, sodium polyacrylate, bisabolol, 1,2-hexanediol, caprylyl glycol, cyclopentasiloxane, disodium edta, acrylates/c10-30 alkyl acrylate crosspolymer, salicylic acid, parfum/fragrance, trideceth-6, sargassum muticum extract, palmaria palmata extract, tartaric acid, sodium metabisulfite, sodium sulfite, peg/ppg-18/18 dimethicone, sodium lauryl sulfate, linalool, limonene, glycyrrhiza uralensis (licorice) root extract, potassium sorbate, butylene glycol, sodium phosphate, carica papaya (papaya) fruit extract, psidium guajava fruit extract, glycyrrhiza glabra (licorice) rhizome/root extract, glycyrrhiza glabra (licorice) root extract, farnesol, saxifraga sarmentosa extract, bht Thanks again
Walker RF
Supporting this, Sun et al