Its been clinically studied since 1973 (and there are tons of medical journals you can read on it) but everything I am saying is considered alleged and supposed because there isnt FDA-approved evidence for these claims
Sulfur-rich vegetables like broccoli, cauliflower, and Brussels sprouts contain compounds that boost glutathione synthesis
For example, when aliquoting into multiple tubes, its not a bad idea to keep the vial on a chilled rack (or ice pack) to minimize time at room temp
Twenty microliters of supernatant was transferred into a 96-well plate, and 200 l of 37 C o-dianisidine hydrochloride solution was added immediately before the optical density was read at 450 nm and again 30 s later, as previously described 26
The following chart outlines both the recommended daily intake (RDI) and tolerable upper intake levels (UL) for fat-soluble and water-soluble vitamins ( Due to potential toxicity, its not recommended to consume more than the tolerable upper intake levels set for the nutrients listed above
Nutrients, 15 (11), 2597