glutathione studies 2015 A locally activatable sensor for robust quantification of organellar Clinical Trial Backed Glutathione 250

So, in the context of glutathione, the reduced form is referring to cysteines sulfur atom keeping its electrons to itself (Figure 2)

This formula includes Vitamin C, Milk Thistle Extract, and L-Glutathione reduced to help with absorption and promote aging defense and skin complexion.-No Aftertaste & Easy To Swallow Our Liposomal glutathione softgel is easy to swallow and doesn't leave an unpleasant aftertaste

Marusich JA, Antonazzo KR, Wiley JL, Blough BE, Partilla JS, Baumann MH (2014) Pharmacology of novel synthetic stimulants structurally related to the bath salts constituent 3,4-methylenedioxypyrovalerone (MDPV)

For a deeper look at the molecule itself, Understanding How Glutathione Works in Our Body is a helpful next read