Although it is generally known for its safety profile, NAC supplementation in an animal model appeared to accelerate lung cancer growth (36)
Researchers derived this sequence from a naturally occurring protein found in human gastric juice, where it appears to play a protective role in the digestive system
In addition, compared to the Control group, the DAI score in the DSS group exhibited a sharp increase starting on day 4
The human trials people cite tested the full protein rather than the fragment being sold, and most of those were never published or failed to show it worked
By reducing oxidative stress and influencing melanin production, glutathione may help improve the appearance of dark spots, uneven skin tone, and dullness over time
The clinical trials cited were conducted by other research groups