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Last reviewed: June 3, 2026 · PeptiDex Editorial Team
© 2026 PeptiDex. All rights reserved.
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⚠️ Research Compound — Glutathione is a research chemical. It is not FDA-approved for human therapeutic use. Information on this page reflects published research literature and is not medical advice. Do not use without licensed medical supervision. [Full disclaimers]
Home/Library/Glutathione

Glutathione

PeptiDex Research
Last reviewed June 3, 2026

Also known as: GSH, L-Glutathione, Gamma-Glutamylcysteinylglycine, Reduced Glutathione

Quick Answer

Glutathione is a antioxidant research compound (not FDA-approved for human use) studied for detoxification. Glutathione is the body's most important natural antioxidant, studied for detoxification, immune support, skin brightening, and protecting cells from oxidative damage throughout the body. Research dose: 200–600 mg 2-3x/week. Half-life: 2 hours. Available from COA-verified vendors with code PEPTIDEX for up to 20% off.

Where to Source
Ranked by $/mg
1Amino Club Best $/mg
$47.99
$59.99Save $12.00
1500mg vial
$0.04/mg
99%+ purityCOA · Apr 2026
Use code for 20% off:
Shop Amino Club
Compare all 1 vendors →

Rankings independent · Research use only

Glutathione is the body's master antioxidant — a tripeptide (glutamate-cysteine-glycine) present in every cell. It neutralizes reactive oxygen species, regenerates vitamins C and E, supports Phase II

Antioxidant
Half-life: 2 hours
20 studies indexed
Updated: April 2026

Where to Buy Glutathione

COA-verified vendors · Use code PEPTIDEX for up to 20% off

* Prices for research peptide acquisition. Not therapeutic products.

VendorPurityList PriceWith PEPTIDEXCodeShop
Amino ClubEditor's Pick
99%+$59.991500 mg
$47.99Save 20%
PEPTIDEX

* Research vendor — verify your regional regulations before purchase.

Shop
Ascension Peptides
98%+$149.991500 mg
$75.00Save 50%
PEPTIDEX

* Research vendor — verify your regional regulations before purchase.

Shop
Amino ClubEditor's Pick
$59.99 · 1500 mg$47.99−20%

Use code PEPTIDEX for 20% off at Amino Club.

* Research vendor — verify your regional regulations before purchase.

Shop at Amino Club
Ascension Peptides
$149.99 · 1500 mg$75.00−50%

Use code PEPTIDEX for 50% off at Ascension Peptides.

* Research vendor — verify your regional regulations before purchase.

Shop at Ascension Peptides

§ Mechanism of Action

Glutathione is the body's master antioxidant — a tripeptide (glutamate-cysteine-glycine) present in every cell. It neutralizes reactive oxygen species, regenerates vitamins C and E, supports Phase II liver detoxification, and modulates immune cell function. Injectable GSH bypasses poor oral bioavailability.

§ Primary Benefits

  1. 1Detoxification
  2. 2antioxidant defense
  3. 3immune support
  4. 4skin brightening

§ Clinical Evidence

Glutathione: overview of biosynthesis, regulation, and clinical role

Forman et al. (Mol. Aspects Med.): Comprehensive review of glutathione's role in redox signaling, detoxification, and its depletion in disease states including Parkinson's, liver disease, and cancer.

Strong

Glutathione and immune function

Dröge & Breitkreutz (Proc. Nutr. Soc.): Review demonstrating glutathione's critical role in lymphocyte proliferation, NK cell activity, and overall immune defense.

Moderate

Glutathione for skin lightening: randomized controlled trial

Weschawalit et al. (Clin. Cosmet. Investig. Dermatol.): RCT showing oral glutathione supplementation significantly reduces melanin index and improves skin elasticity and wrinkles.

Moderate

Glutathione depletion in Parkinson's disease substantia nigra

Sian et al.: Early landmark study demonstrating reduced glutathione levels as one of the earliest biochemical changes in Parkinson's disease pathology.

Strong

USP10 from Human Umbilical Cord Mesenchymal Stem Cells-Derived Extracellular Vesicles Mediates SCL7A11 Deubiquitination in Epithelial Cells: A Key to Anti-ferroptosis and Anti-fibrosis in Pulmonary Fibrosis.

A 2026 study found that extracellular vesicles from human umbilical cord mesenchymal stem cells reduced pulmonary fibrosis and ferroptosis in a mouse model. Researchers demonstrated this effect was driven by USP10-mediated deubiquitination and stabilization of the SLC7A11 protein.

Preclinical

Effects and mechanisms of NAD + on lung injury after cardiac arrest and cardiopulmonary resuscitation in swine.

A 2026 study demonstrated that NAD+ administration significantly attenuated lung injury following cardiac arrest and resuscitation in a swine model. Researchers found this effect was likely mediated by suppressing ferroptosis through the modulation of the YAP/ACSL4 signaling pathway.

Preclinical

Combating Cadmium-Induced Neurotoxicity, Oxidative Stress, and Inflammatory Pathways Using DOPA-31, a Dioxopiperidinamide Derivative in an In Vivo Zebrafish Model.

A 2026 preclinical study demonstrated that DOPA-31 mitigated cadmium-induced neurotoxicity in a zebrafish model by reducing oxidative stress and downregulating pro-inflammatory markers. Researchers found the derivative improved motor and cognitive functions while upregulating neuroprotective factors and reducing neuronal damage.

Preclinical

Vaccarin Improves Myocardial Ischemia-Reperfusion Injury by Attenuating Oxidative Stress and Ferroptosis Through Reducing NOX4-Modulated JAK2/STAT3 Pathway Activation.

In a 2026 preclinical study, researchers demonstrated that vaccarin alleviated myocardial ischemia-reperfusion injury in mouse and cellular models. The findings indicated that vaccarin suppressed oxidative stress and ferroptosis by inhibiting the NOX4-driven JAK2/STAT3 signaling pathway.

Preclinical

ZFP36L1 Enhances Microglial Ferroptosis in Ischemic Stroke by Reducing FTO-Mediated N6-Methyladenosine Demethylation of ACSL1 mRNA.

A 2026 study demonstrated that ZFP36L1 promotes microglial ferroptosis and neuroinflammation during ischemic stroke by reducing FTO mRNA stability and increasing ACSL1 expression. Researchers found that silencing ZFP36L1 successfully alleviated cerebral ischemic injury in mouse models.

Preclinical

Ferroptosis in Breast Cancer: Molecular Insights and Therapeutic Strategies.

Targeting ferroptosis exploits metabolic vulnerabilities in breast cancer subtypes and influences the tumor microenvironment, a 2026 review found. The research demonstrated that this iron-dependent cell death mechanism provides a potential strategy to address drug-resistant cancer stem cells.

Emerging

§ Safety Profile

Excellent safety profile. Used clinically for decades. IV and SubQ routes well-tolerated. Rare allergic reactions possible. May reduce effectiveness of some chemotherapy drugs — avoid during cancer treatment without oncologist approval.

See our evidence grading methodology for how we evaluate and grade peptide safety data.

§ Dosing Protocol

* Dosing data from published literature — not a human use recommendation.

RouteSubQ
Dose Range200000–600000 mcg
Frequency2-3x/week
TimingMorning
Cycle Length4–12 weeks
BAC Water3 ml / 1500mg vial

SubQ: 200-600mg. IV push: 600-2000mg. For skin brightening, consistent dosing over 8-12 weeks is needed. Often combined with Vitamin C for synergistic antioxidant effect.

§ Pharmacokinetics

⏱️ Half-Life: 2h

Plasma concentration over time
100%50%0%0t½ = 2h

§ Expected Outcomes

Week 1

Improved energy and reduced oxidative stress markers

Weeks 2–4

Skin brightening begins; improved liver function markers

Month 2–3

Noticeable skin lightening effect; improved immune markers; better hangover recovery

Long-term

Sustained antioxidant protection; potential neuroprotective benefits

§ Adverse Effects

Side EffectIncidenceSeverity

Injection site redness

~5% of usersmild

Mild bloating (oral)

~8% of usersmild

Rare allergic reaction

<1% of usersrare

Incidence rates sourced from published clinical trial data where available; otherwise based on community research observations.

Where to Source Glutathione for Research

Finding verified, high-purity Glutathione requires rigorous COA verification. We independently evaluate vendors based on third-party HPLC testing, purity thresholds (≥98%), and batch-specific documentation.

View COA-Verified Glutathione

✓ Third-party tested·✓ US shipping·✓ COA on every batch

Disclosure: PeptiDex may earn a commission from purchases made through affiliate links. This does not affect our editorial independence or recommendations. We exclusively feature vendors that pass our strict quality verification protocols.

PEPTIDEX coupon for GlutathioneSave 20% on Glutathione at Amino Club & verified vendors →
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Frequently Asked Questions

Cite This Page

PeptiDex. (2026). Glutathione. PeptiDex Research Platform. https://peptidex.app/library/glutathione

For academic and research purposes.

⚠️ Educational only · Not medical advice · For research use only. Information on this page is compiled from peer-reviewed literature and is intended strictly for educational and informational purposes. Peptides discussed may be unapproved research chemicals — consult a licensed healthcare professional before considering any peptide compound. Read our full disclaimer

Affiliate disclosure: PeptiDex may earn commissions from purchases made through vendor links on this page. This does not affect our editorial ranking or vendor recommendations — we exclusively feature vendors that pass independent COA verification. See our methodology · Editorial policy

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Where to Source
Ranked by $/mg
1Amino Club Best $/mg
$47.99
$59.99Save $12.00
1500mg vial
$0.04/mg
99%+ purityCOA · Apr 2026
Use code for 20% off:
Shop Amino Club
Compare all 1 vendors →

Rankings independent · Research use only

§ Quick Reference

CategoryAntioxidant
Half-Life2 hours
RouteSubQ
Dose200000–600000 mcg
Studies20
FDAResearch Only

§ On This Page

  • How It Works
  • Benefits
  • Key Studies
  • Safety Notes
  • Dosing Protocol
  • Half-Life
  • Timeline
  • Side Effects
§ About the Author Verified
PeptiDex Research — independent peptide research project

PeptiDex Research

Independent researcher, not a medical professional

PeptiDex Research is the byline used by the independent researcher who builds and maintains PeptiDex. The site is a one-person research project — there is no editorial board, no medical reviewers, and no clinical staff. Content is produced by reading...

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Last fact-checked: June 3, 2026 · PeptiDex Editorial Team