CELLULAR RENEWAL · RESEARCH USE ONLY
- Independent third-party HPLC verified
- ≥99% purity floor on every lot
- Cold-chain shipping, signature required
CELLULAR RENEWAL · RESEARCH USE ONLY
Glutathione (GSH) — endogenous tripeptide and master cellular antioxidant, 600mg lyophilized research vial. A reference compound in oxidative-stress, redox-signaling, and hepatic-detoxification research.
Compound identity
- Compound: L-Glutathione, reduced (GSH)
- CAS Number: 70-18-8
- Class: Tripeptide (γ-L-glutamyl-L-cysteinyl-glycine)
- Mechanism (in vitro): Direct free-radical scavenger; substrate for glutathione peroxidase and glutathione-S-transferase enzyme families; cofactor in cellular redox-buffering systems
Research context
Glutathione is the most abundant intracellular thiol antioxidant and is referenced extensively across oxidative-stress, redox-biology, and detoxification literature. Published research has examined glutathione in mitochondrial-function studies, hepatic Phase II conjugation pathways, neuroprotection models, and aging-pathway investigations. Researchers studying redox homeostasis, NRF2/ARE signaling, and free-radical biology reference glutathione as the primary endogenous redox-buffer reference compound.
Vial composition
- 600 mg L-Glutathione (reduced), lyophilized
- Sealed amber vial with aluminum crimp seal
Quality verification
- HPLC ≥99% purity, batch-specific Certificate of Analysis
- Mass spectrometry identity confirmation (matched molecular weight)
- Heavy metal and endotoxin panel testing per batch
- Synthesized in independently audited US laboratories with full toxicity and heavy-metal panels per batch
- Cold-chain shipped same business day from our US facility
Storage & handling
- Sealed lyophilized vial: store at -20°C, away from light (≥24 months stability)
- After reconstitution: refrigerate at 2–8°C, use within 30 days, protect from light
- Reconstitute with bacteriostatic water (included free with order)
- Avoid repeated freeze-thaw cycles
About Merit Sciences
Merit Sciences supplies third-party tested research-grade peptides to qualified researchers in the United States. Every batch undergoes independent HPLC and mass spectrometry verification. Certificates of Analysis are publicly available for each lot at meritsciences.com — researchers can review purity data before placing an order. Cold-chain shipping, same-day fulfillment, and lot-traceable batch documentation are standard on every order.
For laboratory research use only. Not for human or veterinary use. No medical claims made. By purchasing you certify that you are a qualified researcher 21 years or older and will use this material strictly in vitro. Merit Sciences Inc., Delaware, USA.
References
All Merit Peptides products are sold strictly for laboratory and scientific research use. They are not intended for human consumption, veterinary use, or any therapeutic application. These products have not been evaluated by the U.S. Food and Drug Administration and are not intended to diagnose, treat, cure, or prevent any disease.
By purchasing, you confirm that you are a qualified researcher or licensed professional purchasing these compounds for in-vitro research, laboratory analysis, or other lawful scientific use. Resale, redistribution, or any human or animal application is strictly prohibited.
CELLULAR RENEWAL · RESEARCH USE ONLY
Glutathione (GSH) — endogenous tripeptide and master cellular antioxidant, 600mg lyophilized research vial. A reference compound in oxidative-stress, redox-signaling, and hepatic-detoxification research.
Compound identity
- Compound: L-Glutathione, reduced (GSH)
- CAS Number: 70-18-8
- Class: Tripeptide (γ-L-glutamyl-L-cysteinyl-glycine)
- Mechanism (in vitro): Direct free-radical scavenger; substrate for glutathione peroxidase and glutathione-S-transferase enzyme families; cofactor in cellular redox-buffering systems
Research context
Glutathione is the most abundant intracellular thiol antioxidant and is referenced extensively across oxidative-stress, redox-biology, and detoxification literature. Published research has examined glutathione in mitochondrial-function studies, hepatic Phase II conjugation pathways, neuroprotection models, and aging-pathway investigations. Researchers studying redox homeostasis, NRF2/ARE signaling, and free-radical biology reference glutathione as the primary endogenous redox-buffer reference compound.
Vial composition
- 600 mg L-Glutathione (reduced), lyophilized
- Sealed amber vial with aluminum crimp seal
Quality verification
- HPLC ≥99% purity, batch-specific Certificate of Analysis
- Mass spectrometry identity confirmation (matched molecular weight)
- Heavy metal and endotoxin panel testing per batch
- Synthesized in independently audited US laboratories with full toxicity and heavy-metal panels per batch
- Cold-chain shipped same business day from our US facility
Storage & handling
- Sealed lyophilized vial: store at -20°C, away from light (≥24 months stability)
- After reconstitution: refrigerate at 2–8°C, use within 30 days, protect from light
- Reconstitute with bacteriostatic water (included free with order)
- Avoid repeated freeze-thaw cycles
About Merit Sciences
Merit Sciences supplies third-party tested research-grade peptides to qualified researchers in the United States. Every batch undergoes independent HPLC and mass spectrometry verification. Certificates of Analysis are publicly available for each lot at meritsciences.com — researchers can review purity data before placing an order. Cold-chain shipping, same-day fulfillment, and lot-traceable batch documentation are standard on every order.
For laboratory research use only. Not for human or veterinary use. No medical claims made. By purchasing you certify that you are a qualified researcher 21 years or older and will use this material strictly in vitro. Merit Sciences Inc., Delaware, USA.
References
RECONSTITUTION & RESEARCH PROTOCOLS
Emerging clinical evidenceResearch protocol intensities, summarized from published literature. The math is computed for the vial size you pick. Not a dosing recommendation.
Clinical use of IV glutathione is well-established (Parkinson's research, antioxidant studies). SC at smaller doses is practitioner-derived.
Reference research protocols from published peer-reviewed studies. Each card cites its source. This calculator is not a dosing recommendation. For research use only. Selection of any specific protocol is the responsibility of the qualified investigator under appropriate institutional oversight.
RECONSTITUTION & STORAGE PROTOCOL
Procedure
- Allow vial to equilibrate to room temperature before reconstitution.
- Inject solvent slowly along the inner wall of the vial.
- Gently swirl until fully dissolved.
- Glutathione is hydrolytically unstable — use within stated reconstituted shelf life.
Storage & stability
| Lyophilized | ≥24 months at -20°C, light-protected, sealed. |
| Reconstituted | 14 days at 2-8°C — glutathione oxidizes in solution. |
For research use only. Protocol values are derived from established laboratory practice and published peptide handling literature. Specific experimental designs may require alternative reconstitution parameters.
Lab Results & Purity Testing
Third-party lab results confirming 99%+ purity available for every batch. Certificate of Analysis provided with purchase.
All Merit Peptides products are sold strictly for laboratory and scientific research use. They are not intended for human consumption, veterinary use, or any therapeutic application. These products have not been evaluated by the U.S. Food and Drug Administration and are not intended to diagnose, treat, cure, or prevent any disease.
By purchasing, you confirm that you are a qualified researcher or licensed professional purchasing these compounds for in-vitro research, laboratory analysis, or other lawful scientific use. Resale, redistribution, or any human or animal application is strictly prohibited.
RESEARCH FAQ
Common research questions.
How do you verify peptide purity?
Every batch is tested by an independent third-party laboratory using High-Performance Liquid Chromatography (HPLC) for purity quantification and mass spectrometry for structural identity. Lots that don't clear our 99% purity floor are not released. The full Certificate of Analysis is published on each product page.
Where is the Certificate of Analysis (COA) for the lot I'd receive?
Each product page links to the COA for the current shipping batch. After purchase, the COA for your specific lot is permanently attached to your order record. Past COAs are also accessible via your account.
How should I store the compounds when they arrive?
Lyophilized peptides are stored at –20°C, away from light. Storage protocols vary by compound; consult product COA. Materials supplied for in-vitro research only.
How fast do orders ship?
Orders placed before 2pm EST ship the same day from our US-based facility. Temperature-sensitive compounds ship in cold-chain insulated packaging with gel packs. Tracking is provided via email.
Are these products approved for human or veterinary use?
No. All products sold by Merit Peptides are intended strictly for laboratory and scientific research use only. They have not been evaluated by the U.S. Food and Drug Administration and are not for human consumption, veterinary use, or any therapeutic application.
What are your bulk and volume pricing tiers?
Tiered discounts apply automatically at checkout: 10% off when you order 3 or more of any compound, 15% off on orders of 6 or more, and 20% off on orders of 12 or more. No coupon code required.
Are your products manufactured in the US?
Yes. All Merit Peptides compounds are synthesized and formulated in independently audited US laboratories with full toxicity and heavy-metal panels per batch. Our manufacturing partners follow current Good Manufacturing Practice (cGMP) guidelines.
What if my compound arrives damaged or my COA doesn't match?
Contact info@meritpeptides.com within 7 days. We'll replace the compound or refund the order. Every shipment is matched to the COA on file before it leaves the facility.