Try applying Vitamin C 1000mg Tablets, Vitamin C is a highly synergistic ingredient with glutathione
Glutathione is sometimes referred to as the "master antioxidant" in the body, with a protective role in the liver, a hardworking organ that needs particular protection from oxidative stress
Another study (where patients were given both GSH and the oxidized form GSSG) showed that a very small percentage of participants dealt with either temporary liver issues or a rash
1 2 Clinical hematology: theory and procedures (4th ed.)
[PubMed] Clarke R, Grimley Evans J, Schneede J, et al
4a, the fraction of growth inhibition was calculated by subtracting the fraction of treatment condition confluence over maximal confluence from 1 at the confluence end point, which was determined to be the first time point for each plate in which the mean control condition surpassed 97% confluence