Common Dosage
200mg - 600mg IV/IM or 500mg - 1000mg oral/liposomal daily
Category
Antioxidant
- Detoxification
- Immune support
- Skin brightening
- Liver protection
- Anti-aging
Glutathione (γ-L-glutamyl-L-cysteinyl-glycine, GSH) is a tripeptide antioxidant synthesized in virtually every cell of the body. It was first isolated in 1888 by J. de Rey-Pailhade and characterized fully in the 1920s–30s. Its role as the primary intracellular antioxidant and master detoxification molecule makes it one of the most studied biochemical compounds in medicine. Levels peak in youth and decline significantly with age, disease, and toxic exposures — making supplementation an attractive anti-aging and health optimization strategy.
Glutathione is the predominant intracellular reducing agent, protecting cells from oxidative damage by directly neutralizing reactive oxygen species and regenerating other antioxidants (vitamins C and E). Through the glutathione-S-transferase enzyme system, it conjugates to toxic metabolites for hepatic excretion — making it central to Phase II liver detoxification. It also plays critical roles in immune function, DNA synthesis, and mitochondrial health. GSH exists in reduced (active) and oxidized (GSSG) forms; the GSH:GSSG ratio is a marker of oxidative stress.
- Liver disease management — NAFLD, drug-induced hepatotoxicity, cirrhosis
- Chemotherapy toxicity reduction — protecting healthy tissue during cancer treatment
- Neurodegenerative disease research — Parkinson's, Alzheimer's
- Immune system support
- Skin brightening and hyperpigmentation reduction
- Athletic performance and recovery
- Heavy metal detoxification support
- HIV/AIDS antioxidant support
IV Glutathione in Liver Disease
Italian clinical trials in alcoholic non-cirrhotic liver disease patients showed significant improvements in liver enzyme profiles (AST, ALT, GGT) and histological markers of liver damage with IV glutathione treatment — providing clinical validation for its hepatoprotective role.
Parkinson's Disease Pilot
A small pilot study by Dr. David Perlmutter demonstrated measurable improvement in Parkinson's motor symptoms following IV glutathione infusions, attributed to restoration of dopaminergic neuronal antioxidant defense. While preliminary, the results have driven widespread off-label use in neurological conditions.
Skin Brightening Research
Multiple randomized trials, particularly from Southeast Asia, have demonstrated measurable skin lightening with oral and IV glutathione, attributed to its inhibition of tyrosinase (rate-limiting enzyme in melanin synthesis). This application has become one of the most popular uses in aesthetic medicine.
- Oral bioavailability is low for reduced glutathione — liposomal formulations or precursors (NAC, glycine) may be more effective
- IV administration at high doses or rapid infusion can cause allergic reactions, Stevens-Johnson syndrome (rare but serious), and thyroid dysfunction
- Potential for interference with melanin in ways that could theoretically affect UV protection — sun protection becomes more important during skin-brightening use
- Zinc depletion with heavy dosing — zinc is required by the enzymes that recycle glutathione
- Specific concern about skin-lightening use practices in some regions involving excessive doses — toxicity risk
- Rare allergic reactions
- Zinc depletion with high doses
Anti-Aging & Longevity
Strategies to improve skin elasticity, sleep quality, energy levels, and cellular health.
Immune System Support
Protocols for boosting immune defense and modulating autoimmune responses.
Skin & Hair Health
Targeted treatments for skin elasticity, wound healing, and hair restoration.