glutathione cystine Intercellular antioxidant support L-Cysteine for Glutathione
Description
10.1016/j.ecoenv.2015.01.026 106 RahmanM

Labelling: Clearly label the opened container with the date of opening and any other relevant information, such as the expiration date or the intended use of the water

Li W, Zeng Q, Liu Y, Zhao X, Chen X, Yang W

Interestingly, in humans with B12 deficiency then, that's also been associated with dementia, which might explain why Elizabeth cat was constantly crying and vocalizing
