One small study of patients with early, untreated Parkinsons disease given high dose intravenous glutathione twice a day for 30 days showed symptom improvement that lasted for 2-4 months after treatment ended (17)
GSH behaves as redox sensor at the DNA synthesis onset by maintaining nuclear architecture providing the appropriate redox environment for DNA replication and safeguarding DNA integrity (72) and is a key regulator of epigenetic events critical in cell proliferation regulation and cellular resistance to apoptosis (73)
Studies report 75% reduction of lipid peroxidation in gastric mucosa homogenates at concentrations between 10-100 mM
Andrew Huberman: Pregnant
Goldstein AL, Hannappel E, Kleinman HK
While that's substantially higher than the 600mg starting dose we generally favor for people new to NAC, it reflects the GlyNAC protocols studied in healthy-aging research.34 57 58 Some readers may prefer to start with a smaller serving for tolerability, but the clinical research on GlyNAC has generally evaluated gram-level doses of both ingredients, so it's unclear whether substantially lower amounts would provide the same benefits