acyl glutathione eyelid serum Perricone MD Essential Fx Serum, 0.5-oz and uneven texture Perricone MD Essential Fx Acyl-Glutathione

Its the smoking gun, giving a clear diagnosis even if your B12 level looks okay on paper

But I believe they're overshadowing the much bigger story

"The findings of this study, combined with previous investigations, suggest that these compounds may alleviate the negative effects of alcohol on behavior function, emphasizing the importance of alcohol metabolism in liver in managing alcohol-induced effects." (19) May Support Liver Function Glutathione is needed to help the liver detoxify effectively

doi:10.1016/j.jbiosc.2016.12.011 Schmitt B, Vicenzi M, Garrel C, Denis FM (2015) Effects of N-acetylcysteine, oral glutathione (GSH) and a novel sublingual form of GSH on oxidative stress markers: a comparative crossover study