We get these questions quite a lot
No, you cant eat too much glutathione
Hill stresses that these uses are still being studied, and so far, evidence is limited or inconclusive
Kidney international , doi: 10.1016/j.kint.2016.03.035 (2016)
For more details on homocysteine, see the article: Homocysteine and Vitamin B12 The Steps of the Methionine Cycle Step 1: methionine is converted into SAM by the enzyme methioninadenosyltransferase (MAT) in the presence of magnesium (Mg) and ATP (universal energy donor)
It also serves as a required substrate for two important families of enzymes: the sirtuins, which help regulate healthy cellular aging, and the PARPs, which help repair damaged DNA