ascorbic acid with glutathione Scheme of the interaction of (GSH), Codeage Liposomal Glutathione+ Supplement -

There is no long-term safety data on IV glutathione regarding liver damage

These allium vegetables provide direct glutathione support through their sulfur content while also offering additional health benefits

195 Considering everything stated before implying cysteine as relevant to sustain the high performance (survival and proliferation) of cancer cells, acting as a detoxifying component or as an energy or biomass source

Lancet 379(9822):12561268 Kieliszek M, Kot AM, Bzducha-Wrbel A, Baejak S, Gientka I, Kurcz A (2017) Biotechnological use of Candida yeasts in the food industry: a review

So, I think iron and selenium are the two big ones where it is like, even if you dont have a lot of money and no insurance, you should probably get those tested every once and awhile