Shop Glutathione 1500mg from Eternal Peptides, where rigorous third-party testing by independent analytical labs ensures exceptional batch-to-batch consistency for reliable research outcomes. Buy high-purity verified Glutathione 1500mg with free USPS priority shipping on orders over $200. Sold for research use only.
Peptide Characteristics
| Property | Details |
| Name | Glutathione L-Glutathione (Reduced form, GSH) |
| Sequence | γ-L-Glutamyl-L-cysteinyl-glycine (Glu-Cys-Gly) |
| Molecular Formula | C10H17N3O6S |
| Molecular Weight | 307.33 g/mol |
| PubChem CID | 124886 |
| Product Form | Lyophilized powder in 1500 mg vials |
| Purity | ≥99%, verified via third-party laboratory analysis with lot-specific Certificates of Analysis (COA) available |
| Solubility | Highly soluble in sterile water, phosphate-buffered saline (PBS), or aqueous solutions; recommended reconstitution at 10-50 mg/mL for optimal stability |
| Storage | Store lyophilized powder at -20°C (-4°F); reconstituted solution stable at 2-8°C (36-46°F) for up to 7 days or -20°C for extended storage |
| pH Stability | Most stable at pH 3-4; susceptible to oxidation at neutral to alkaline pH |
| Redox State | Reduced form (GSH); contains free thiol group essential for antioxidant activity |
Glutathione – Handling & Storage Guidelines
Proper handling and storage of glutathione is essential to maintain its reduced state, prevent oxidation, and ensure experimental reproducibility throughout research protocols.
- Storage of Lyophilized Powder: Store unopened vials at -20°C (-4°F) protected from light and moisture. Under these conditions, lyophilized glutathione remains stable for 24-36 months. Transfer vials immediately to frozen storage upon receipt.
- Reconstitution: Reconstitute glutathione using cold, degassed sterile water or bacteriostatic water to achieve desired concentrations, typically 10-50 mg/mL. For the best stability, purity, and consistent results, order our bacteriostatic water with your glutathione order.
- Alternatively, use slightly acidic solutions (pH 3-5) to minimize oxidation. Allow powder to reach room temperature before adding reconstitution solution, then gently swirl to dissolve.
- Oxidation Prevention: Glutathione is highly susceptible to oxidation in solution, particularly at neutral or alkaline pH and in the presence of oxygen. Prepare solutions immediately before use, minimize air exposure, and consider adding EDTA (0.1-1 mM) to chelate trace metals that catalyze oxidation.
- Working Solution Storage: Store reconstituted glutathione at 2-8°C (36-46°F) for up to 7 days maximum. For extended storage, aliquot into single-use portions in amber or foil-wrapped cryovials and store at -20°C (-4°F) or -80°C (-112°F). Limit freeze-thaw cycles to 2-3 maximum to prevent oxidative degradation.
- Laboratory Safety: Handle using appropriate PPE including gloves, lab coat, and eye protection. Follow institutional biosafety guidelines and dispose of materials according to established waste management protocols.
Glutathione – COA / Quality Assurance
Eternal Peptides provides comprehensive Certificates of Analysis (COAs) for every glutathione batch for transparency and traceability. A COA delivers detailed analytical data essential for experimental reproducibility, regulatory compliance, and quality assurance documentation.
That includes information on:
- Peptide Identity Verification: Confirmed through high-performance liquid chromatography (HPLC) retention time matching and mass spectrometry analysis, verifying the correct molecular weight of 307.32 g/mol and tripeptide structure.
- Purity Assessment: Quantified via HPLC with detection methods measuring both reduced glutathione (GSH) content and potential oxidized glutathione (GSSG) or other impurities, typically demonstrating ≥98% purity for research-grade material.
- Sterility Testing: Conducted according to USP <71> sterility testing protocols to ensure freedom from bacterial and fungal contamination.
- Endotoxin Levels: Measured via Limulus Amebocyte Lysate (LAL) assay to ensure compliance with research-grade standards, typically <1.0 EU/mg.
- Storage Recommendations: Tailored guidance for optimal stability based on the specific tested lot, including temperature requirements and expiration dating.
Eternal Peptides partners with leading independent analytical laboratories, including Janoshik and Finnrick Analytics, to conduct rigorous testing free from conflicts of interest. This third-party approach ensures objective, reliable results meeting international analytical standards.
For accessibility, COAs are lot-specific, uniquely identified by batch numbers printed on product vials, and readily accessible through the Lab Tests page on our website.
Legal / Regulatory Disclaimer — Glutathione
Synthetic glutathione is strictly for laboratory research purposes only and is not approved by the FDA or any regulatory authority for human consumption, veterinary use, clinical administration, therapeutic applications, or diagnostic procedures.
While glutathione is naturally present in the human body, the safety and efficacy of exogenous glutathione supplementation have not been fully established through controlled clinical trials meeting regulatory standards for therapeutic use. This product is intended exclusively for qualified researchers operating within approved protocols and appropriate biosafety frameworks.
Purchasers are solely responsible for ensuring compliance with all applicable federal, state, and local regulations governing research compounds, as well as institutional policies. Eternal Peptides does not condone, support, or provide guidance for any non-research applications of this compound.
Always quality-tested, verified with third-party COAs
At every step, we prioritize quality by conducting rigorous third-party testing on all our products. These tests focus on five key characteristics — identity, purity, sterility, endotoxin levels, and heavy metal content — ensuring that each product meets the highest standards of quality, with independent third-party Certificates of Analysis (COAs) to verify our commitment to excellence.
Identity Test
Identity testing ensures that the product contains the correct ingredient as labeled, verifying its authenticity and matching it to established reference standards.
Purity Test
Purity and concentration testing verifies that the ingredient is present in the correct amount, with a purity of 99% or higher to meet stringent quality standards.
Sterility Test
Sterility testing ensures that the product is completely free from bacteria, fungi, and other microorganisms.
Endotoxin Test
Endotoxicity testing specifically detects and quantifies lipopolysaccharides (LPS), components of bacterial cell walls, to ensure the product is free from endotoxins.
Heavy Metals Test
Heavy metals testing ensures that the product is free of heavy metals such as lead, arsenic, mercury, cadmium, and other heavy metals.
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