It is known as the partition ratio
This means you might be taking a high dose but absorbing very little of the actual glutathione molecule
Plant Growth Regul 91(2):221235 Su L, Xie Y, He Z, Zhou X, Liu Y, Zhang R, Li C (2022) Selenium mitigates Cd-induced oxidative stress and photosynthesis inhibition in two cherry tomato cultivars
Dietary Sources You can support natural glutathione production through nutrition: Sulphur-rich foods: Garlic, onions, and cruciferous vegetables (broccoli, kale, cabbage) boost cysteine levels, a key glutathione component
Anafi et al
When administered by trained medical professionals, Glutathione IV drips are generally considered safe and clinically supervised