It exists in two formsreduced (GSH) and oxidised (GSSG)and the ratio between them (GSH:GSSG) is a well-established marker of oxidative stress and cellular resilience
In cases where the cause remains unclear, treatment fails, or there is significant neurological involvement, referral to haematology or gastroenterology may be appropriate for further investigation
The safest lens is simple: what can the product page document, what can analytical testing verify, and what should remain outside product positioning
Despite both promoting improvement for overall health and wellbeing, NAD+ supports cellular energy production, whilst L-glutathione is transformative for detoxification and skincare
J Cell Biol 170(3):455464 Madsen RR, Knox RG, Pearce W, Lopez S, Mahler-Araujo B, McGranahan N, Vanhaesebroeck B, Semple RK (2019) Oncogenic PIK3CA promotes cellular stemness in an allele dose-dependent manner