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L-Glutathione | Master Antioxidant Tripeptide
Glutathione is the body's master antioxidant, a tripeptide produced naturally by the liver. It protects cells against free radicals, peroxides, and heavy metals while eliminating toxins including drugs and pollutants. Injectable glutathione bypasses gastrointestinal breakdown for superior bioavailability compared to oral supplements. Research supports benefits for neurological health, immune function, skin health, and anti-aging.
Glutathione acts as the primary intracellular antioxidant, directly neutralizing reactive oxygen species and regenerating other antioxidants like vitamins C and E. It plays crucial roles in detoxification by conjugating with toxins for elimination, supports immune function through T-cell regulation, protects mitochondria, and maintains cellular redox balance. The thiol group of cysteine provides its antioxidant activity.
?ECG
γ
Position 1
Glutamic Acid
Position 2
Cysteine
Position 3
Glycine
Position 4
Primary cellular antioxidant that neutralizes free radicals and protects against oxidative damage.
Binds and facilitates elimination of heavy metals and environmental toxins.
Essential for hepatic detoxification pathways and liver protection.
IV glutathione showed improvements in mental function and speech quality in case studies.
Protects neurons against oxidative damage and supports brain health.
Improved Th1 cytokines and immune markers in HIV patients with supplementation.
Supports skin health with potential brightening effects through melanin modulation.
Combats age-related oxidative stress and supports cellular longevity.
Injectable glutathione is the most effective delivery method, bypassing GI breakdown for direct absorption. Subcutaneous injections are typically administered 2-3 times weekly. IV administration is fastest-acting but requires clinical supervision. Start with lower doses to assess tolerance.
| Goal | Dose | Frequency | Route |
|---|---|---|---|
| General wellness | 100-200 mg | 2-3x weekly | SubQ |
| Intensive therapy | 200-600 mg | 2-3x weekly | SubQ or IV |
| Detoxification | 600-1000 mg | Weekly IV | IV (clinical) |
| Parkinson's support | 1400 mg | 2-3x weekly | IV (clinical) |
Oral glutathione has poor bioavailability due to GI breakdown. Liposomal formulations may offer improved absorption but are still less effective than injection.
| Goal | Dose | Frequency | Route |
|---|---|---|---|
| Daily supplementation | 250-1000 mg | Daily | Oral |
Both support cellular energy and antioxidant systems; commonly combined in longevity protocols.
Glutathione regenerates oxidized vitamin C, creating synergistic antioxidant effects.
Both protect mitochondria; different mechanisms complement each other.
No known negative interactions.
Antioxidant activity begins
Improved energy and well-being may be noticed
Cumulative detoxification benefits
Full benefits for skin, immunity, and cellular health
Movement Disorders
IV glutathione 1,400 mg 3x weekly showed possible mild symptomatic effect in small trial.
European Journal of Clinical Nutrition
13-week supplementation improved Th1 cytokines including IL-12, IFN-γ, and TNF-α.
Dermatology Reports
Narrative review of efficacy and safety for skin lightening applications.
Annual Review of Nutrition
Comprehensive review of glutathione as master antioxidant and its roles in health.
Plain-English guides and study summaries from published literature.
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