Skin pigmentation RCT, 2022
A randomised trial in 124 participants reported that oral L-cystine with reduced glutathione lightened skin and reduced dark spots more than either component alone.
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Anti-Aging
Glutathione
Glutathione is a tripeptide of glutamate, cysteine and glycine that acts as the body's principal intracellular antioxidant. It supports detoxification and immune function, and is used intravenously, subcutaneously and orally, including in cosmetic skin lightening settings.
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Overview
What is Glutathione?
Glutathione is a tripeptide of glutamate, cysteine and glycine that acts as the body's principal intracellular antioxidant. It supports detoxification and immune function, and is used intravenously, subcutaneously and orally, including in cosmetic skin lightening settings.
- Antioxidant
- Detoxification
- Immune Support
- Skin Brightening
What the research reports
Reported benefits of Glutathione
Outcomes described across the published Glutathione literature and ongoing study. Read each as research context, not a promised result.
- 01
Antioxidant capacity study
Neutralises reactive oxygen species directly and recycles vitamins C and E, which is its established role in cell biology. Reported in research settings.
- 02
Liver detoxification support
Participates in phase two liver conjugation, the pathway that makes many compounds water soluble for elimination. Noted across the published research record.
- 03
Immune cell function study
Lymphocyte function depends on adequate intracellular glutathione, linking depletion to reduced immune responsiveness. Described in the research record.
- 04
Skin pigmentation research
A 2022 randomised trial reported that L-cystine with reduced glutathione lightened skin and reduced dark spots better than either alone. Reported in research settings.
- 05
Precursor supplementation data
Trials of glycine with N-acetylcysteine reported improved glutathione status, oxidative stress and physical function in older adults. Reported in research settings.
Dosage and protocol
Glutathione dosage and protocol
Protocols use 600 to 2000 mg intravenously, 200 to 600 mg subcutaneously, or 500 to 1000 mg orally in liposomal form. Figures describe study protocols, not a personal regimen.
- Route
- Intravenous or oral route
- Example range
- 600-2000 mg
- Frequency
- One to two times weekly
- Timing
- IV infused 15 to 30 minutes in clinic. Oral taken on empty stomach.
Clinical evidence
Clinical evidence for Glutathione
The published record for Glutathione, labeled by strength so you can see what is settled and what is emerging.
NAC liver procurement trial
A 2021 randomised trial in 214 patients found N-acetylcysteine did not reduce allograft dysfunction but improved ALT with prolonged cold ischemia time. Reported in the cited paper.
SourceNAC tuberculosis trial, 2024
A randomised trial in 140 patients found adjunctive N-acetylcysteine did not improve culture conversion but was linked to better lung function recovery. Reported in the cited paper.
SourceInteractions
How it pairs with other peptides
- N-acetylcysteine
- A precursor rather than a duplicate. NAC raises glutathione synthesis rather than supplying it directly.
- Vitamin C use
- Glutathione recycles vitamin C, so the two are often paired in infusion protocols for that reason.
- Alpha lipoic acid
- Also participates in antioxidant recycling, and the two appear together in many clinic protocols.
- Chemotherapy agents
- Antioxidant supplementation during cancer treatment needs oncology input, since it may affect drug action.
Questions
Frequently asked questions.
What is Glutathione?
Glutathione is a peptide compound used in research settings. It is commonly studied for its role in anti-aging, and many researchers compare supplier quality, purity, and testing data before purchasing.
What are the research benefits of Glutathione?
Glutathione is often evaluated for its potential influence on signaling pathways, recovery support, and targeted research applications. Research interest varies by peptide, formulation, and study design, so buyers typically review purity, dose, and independent lab verification before choosing a source.
How does Glutathione work?
Like other research peptides, Glutathione is typically studied for how it interacts with specific biological pathways and receptor systems. In practice, the way it is formulated, dosed, and tested matters as much as the compound itself, which is why verified suppliers and transparent COAs are important.
Is Glutathione for research use only?
Yes, products like Glutathione are generally intended for research, laboratory, or educational use and are not marketed as approved human therapeutics. Always follow local laws, lab safety practices, and institutional requirements before handling or studying any peptide.
What should I look for before buying Glutathione?
Key checks include verified COA data, peptide form and concentration, supplier reputation, stock status, and cost per mg. Comparing pricing and testing records side-by-side helps reduce the risk of buying an under-tested or misrepresented product.
