glutathione in the cell (GSH) is synthesized cytoplasm by the action of Role of glutathione on cell
Description
Lirussi F, Azzalini L, Orando S, Orlando R, Angelico F

These formulations push concentration toward practical limits for topical application

Diseases of the colon and rectum 66(4):531-542, 2023
In addition, pre-treatment with NAC also had a significant protective effect from apoptosis in both cisplatin-sensitive BT12 cells as well as cisplatin-resistant BT16 cells (Fig

Electrocardiogram monitoring revealed no cardiac conduction abnormalities or other cardiovascular concerns

The problem, though, is that it's very unstable, turns brown and becomes ineffective in no time (after a few month) and the cosmetics industry is trying to come up with smart derivatives that are stable and have the magic properties of pure Vitamin C
