Topical and intraperitoneal addition of TB4 increased re-epithelialisation by 42% over saline controls at day 4, and by up to 61% at day 7 post-wounding
Therefore, do not take its supplement or use topical products containing glutathione without consulting a doctor
Depletion and other background things as you mention are possible, as well as the B-Vits triggering some detox that has been waiting
The smell of sulfur is normal and characteristic of cysteine and is not linked to any change in the product
That decline is part of why it's drawn research interest in the first place: if a molecule occurs naturally and its levels drop as tissue repair capacity drops, it becomes a reasonable candidate for studying repair signaling directly
Spinach, Avocados, Cauliflower, Cabbage, and Broccoli will boost Glutathione