The numbers are not contradictory they answer different questions
Suppression by iron chelator phenanthroline of sodium chloride-enhanced gastric carcinogenesis induced by n-Methyl-N-Nitro-N-Nitrosoguanidine in wistar rats
Since glutathione contributes to gut health by supporting detoxification and cellular repair, it may be beneficial
Generally, it is considered safe, but in cases it can cause mild gastric discomfort like nausea & vomiting or in some cases allergic reactions can also be seen like rashes, swelling
This is particularly beneficial for people who experience dry skin during colder months
References Sikiric, P., Seiwerth, S., Rucman, R., Kolenc, D., Vuletic, L