What Is Reduced L-Glutathione Powder?
Reduced L-Glutathione Powder (GSH) is one of the most biologically significant antioxidant compounds found naturally in plants, animals, fungi, and select bacteria and archaea. As a tripeptide composed of glutamate, cysteine, and glycine, it plays a central role in cellular defense mechanisms, detoxification pathways, and immune system modulation.
At Extract Makers, our Reduced L-Glutathione Powder is produced through an advanced yeast fermentation process, yielding a product of exceptional purity — consistently achieving 99% assay content. The fermentation-derived production route ensures that the final ingredient is vegan, non-GMO, dairy-free, soy-free, and gluten-free, meeting the growing demand for clean-label, allergen-conscious raw materials across global markets.
This high-purity GSH powder is widely sourced by nutraceutical manufacturers, cosmetic formulators, pharmaceutical ingredient buyers, functional food producers, and specialty chemical distributors worldwide.
Production Process & Raw Material Origin
Reduced L-Glutathione Powder is biosynthesized via controlled microbial fermentation using non-GMO yeast strains under tightly regulated conditions. This biological production pathway closely mirrors the natural biosynthesis of glutathione within living organisms, offering a cleaner and more sustainable alternative to chemical synthesis routes.
The fermentation process is carried out in GMP-compliant facilities equipped with advanced separation, purification, and spray-drying technologies. Each production batch undergoes rigorous in-process quality monitoring to ensure consistent molecular integrity, purity profile, and biological activity of the final reduced glutathione ingredient.
Physical & Chemical Characteristics
Reduced L-Glutathione Powder presents as a fine white crystalline powder with excellent solubility in water, making it suitable for a wide range of liquid and solid formulation formats. Key physicochemical parameters are outlined below:
| Parameter | Specification | Tested Result |
|---|---|---|
| Appearance | White Powder | Conforms |
| Particle Size | ≥95% through 80 mesh | Conforms |
| Residue on Ignition | ≤0.1 g/100g | 0.06 g/100g |
| Loss on Drying | ≤0.5 g/100g | 0.23 g/100g |
| Specific Rotation | -15.5° ~ -17.5° | -16.19° |
| Related Substances (Gross) | ≤2.0% | 0.40% |
| GSSG Content | ≤1.5% | 0.22% |
| Assay (Purity) | 98.0% – 101.0% | 99.06% |
The low GSSG (oxidized glutathione) content of 0.22% confirms that the product maintains its fully reduced, biologically active form, which is critical for antioxidant efficacy in both nutritional and cosmetic applications.
Heavy Metal & Residue Analysis
| Test Item | Specification | Result |
|---|---|---|
| Heavy Metals | ≤10 mg/kg | Conforms |
| Chlorides | ≤200 mg/kg | Conforms |
| Sulfates | ≤300 mg/kg | Conforms |
| Ammonium | ≤200 mg/kg | Conforms |
| Iron | ≤10 mg/kg | Conforms |
Microbiological Testing Results
| Microbiological Test | Specification | Result |
|---|---|---|
| Total Plate Count | ≤1,000 CFU/g | \<1,000 |
| Yeast & Mold | ≤100 CFU/g | \<100 |
| Coliforms | ≤10 CFU/g | \<10 |
| Salmonella enterica | Negative | Negative |
| Staphylococcus Aureus | Negative | Negative |
Conclusion: Sample Qualified
All microbiological results confirm that our Reduced L-Glutathione Powder meets international food-grade and pharmaceutical-grade safety standards, providing full confidence for downstream formulators and brand owners.
Health Benefits & Functional Properties of Reduced L-Glutathione
The broad functional profile of Reduced L-Glutathione makes it one of the most versatile bioactive ingredients available in the nutraceutical and cosmetic ingredient markets today.
1. Potent Antioxidant & Anti-Aging Activity
As the body's master antioxidant, GSH directly neutralizes reactive oxygen species (ROS) and supports the regeneration of other antioxidants including Vitamins C and E. Its role in reducing oxidative stress is closely associated with cellular longevity and anti-aging mechanisms.
2. Detoxification & Heavy Metal Chelation
Reduced L-Glutathione is a critical cofactor in the liver's phase II detoxification pathway. It binds to and facilitates the elimination of toxic compounds, xenobiotics, and heavy metals from the body, making it highly relevant for liver health and environmental toxin exposure applications.
3. Immune System Support
GSH supports the optimal function of lymphocytes and other immune cells. Supplementation with Reduced L-Glutathione has been studied in the context of immune modulation, particularly in conditions associated with oxidative stress and immune deficiency.
4. Liver Protection & Hepatic Health
Clinical and preclinical research has explored glutathione's hepatoprotective properties. Its application in the management of liver diseases, including non-alcoholic fatty liver conditions and hepatitis-related damage, represents one of its most established therapeutic uses.
5. Skin Brightening & Complexion Enhancement
In cosmetic and topical formulations, Reduced L-Glutathione is recognized for its ability to inhibit melanin synthesis by modulating tyrosinase activity. This translates to visible skin-lightening, tone-evening, and anti-pigmentation effects, making it a premium active in whitening serums, brightening supplements, and intravenous aesthetic therapies across Asian and global beauty markets.
6. Food Fortification & Flavor Stability
In the food and beverage industry, L-Glutathione functions as a nutritional fortifying agent, flavor intensifier, and dough-conditioning stabilizer, particularly in baked goods where it influences gluten network structure.
Industry Applications
Reduced L-Glutathione Powder serves as a key raw material across multiple high-value industries:
Nutraceuticals & Dietary Supplements
- Antioxidant capsules and tablets
- Liver support and detox formulas
- Immune health supplements
- Anti-aging and longevity stacks
- Liposomal glutathione preparations
Cosmetics & Personal Care
- Skin-brightening and whitening serums
- Anti-aging face creams and emulsions
- Pigmentation treatment products
- IV therapy and aesthetic drip formulations
Pharmaceutical & Clinical Use
- Clinical treatment and supportive therapy for liver diseases
- Adjunctive management in certain eye conditions
- Research applications in immunodeficiency and oxidative stress studies
Functional Food & Beverage
- Fortified nutritional beverages
- Bread and baked goods (dough improver)
- Health-oriented food products with antioxidant claims
Quality Standards & Certifications
Extract Makers operates under a fully integrated quality management system. All Reduced L-Glutathione Powder is manufactured in our GMP-certified production facility, with the following quality certifications in place:
- ✅ GMP (Good Manufacturing Practice)
- ✅ ISO 9001 (Quality Management System)
- ✅ ISO 22000 (Food Safety Management)
- ✅ HACCP (Hazard Analysis & Critical Control Points)
- ✅ Kosher Certified
- ✅ Halal Certified
- ✅ FDA Facility Registration
Third-party laboratory testing is conducted for every production batch, and full Certificate of Analysis (CoA) documentation is provided with all shipments. Test reports are available upon request to support your regulatory compliance, quality audits, and product registration requirements.
Storage & Shelf Life
- Shelf Life: 24 months from production date under recommended conditions
- Retest Date: Every 24 months in original, unopened packaging
- Storage Conditions: Store in a cool, dry environment away from direct light, moisture, and heat sources
- Recommended Storage Temperature: Below 25°C, with relative humidity kept low to preserve the reduced form integrity
Proper storage is essential to maintain the biological activity of Reduced L-Glutathione, particularly its free thiol (-SH) group, which is responsible for its antioxidant functionality.
Packaging Specifications
Extract Makers offers flexible packaging options tailored to the needs of ingredient buyers, distributors, and contract manufacturers:
- Small Quantities: 1 kg – 5 kg aluminum foil bags (vacuum-sealed, nitrogen-flushed available)
- Mid-Range Orders: 10 kg – 20 kg double-lined cartons
- Bulk Orders: 10 kg – 30 kg fiber drums with inner lining
Private Label & Custom Packaging
For brands looking to bring Reduced L-Glutathione products to retail markets, Extract Makers provides a full private label service. We can customize packaging design, apply your brand logo, and prepare retail-ready small bags — eliminating the need for additional printing, repackaging, or secondary labeling operations on your end. This service significantly reduces lead time and operational costs for emerging supplement brands and established distributors alike.
Free Sample Policy
We understand that quality verification is a fundamental step in any ingredient sourcing decision. Extract Makers offers complimentary samples of 10–20 grams of Reduced L-Glutathione Powder for qualified buyers. For high-value material categories, sample pricing may apply and will be confirmed upon inquiry.
Samples are accompanied by a full Certificate of Analysis and relevant technical documentation to support your evaluation process.
Shipping & Logistics
Extract Makers supports efficient international logistics for customers across North America, Europe, Southeast Asia, the Middle East, and beyond:
- Small & Express Orders (under 1 ton): DHL, FedEx, UPS, EMS, and other international courier services
- Large Volume Shipments: Sea freight (FCL/LCL) and railway freight where applicable
All shipments are properly labeled, temperature-monitored where required, and accompanied by complete export documentation including CoA, MSDS, and commercial invoice.
After-Sale Service & Quality Guarantee
Customer confidence is at the core of our business model. All Reduced L-Glutathione Powder supplied by Extract Makers carries a 24-month product guarantee within its stated shelf life. Our after-sale policy includes:
- Hassle-free return and replacement process
- Proportional refunds based on quantity returned for non-conforming products
- Dedicated technical support for formulation and application inquiries
- Responsive customer service for documentation and compliance assistance
Why Source Reduced L-Glutathione Powder from Extract Makers?
For manufacturers, importers, brand owners, and distributors evaluating ingredient suppliers, Extract Makers offers a compelling combination of quality assurance, supply chain reliability, and commercial flexibility:
- 99%+ purity, fermentation-derived GSH with documented low GSSG content
- Full clean-label compliance — vegan, non-GMO, allergen-free
- Multi-standard certifications recognized in major global regulatory markets
- Batch-to-batch consistency backed by rigorous in-house and third-party QC
- Scalable order quantities from sample to full container loads
- Custom packaging and private label capability for brand-ready solutions
- Responsive B2B support from inquiry through delivery and beyond
Request a Quote or Free Sample
To request a free sample, obtain a quotation, or discuss your specific requirements — including custom specifications, formulation guidance, regulatory documentation, or private label arrangements — please contact our team directly:
📧 Email: [email protected]
Our technical sales team will respond promptly with pricing, availability, lead times, and any additional product information you require.
Note: Extract Makers maintains a catalog of over 2,000 botanical extracts, nutritional ingredients, food additives, and specialty chemical raw materials. If you are looking for an ingredient not listed on our website, please reach out directly — we are likely able to source or manufacture it to your specification.
