Glutathione

Lyophilized powder

Glutathione is a tripeptide (glutamate, cysteine and glycine) made in every cell, where it acts as a major antioxidant and detoxification cofactor. Below: today's vial sizes, prices through our link and the vendor's COA details.

Size

$0.03/mg · lot GLTA-062026-1 · 99.89% · In stock

Price

$38.50

List

$55.00

Buy 1500 mg at Nura Peptide

Price shown uses code thepeptidecatalog at Nura Peptide's checkout (30% off list).

Sold by Nura Peptide as Glutathione 1500mg. The Peptide Catalog does not sell peptides; we earn a commission if you buy through this link, at no extra cost to you. For laboratory research use only, not for human or veterinary use. Not FDA-approved. Nothing on this page is medical or dosing advice.

Glutathione research vial sold by Nura Peptide as Glutathione 1500mg
Third-party tested≥99.89% reported purityResearch use only
Certificate of AnalysisLot GLTA-062026-1 · 99.89%View
  • Certificate of Analysis published for every lot (Freedom Diagnostics Testing)
  • Current lots report 99.89% purity or higher
  • Ships from a U.S. fulfillment center, per Nura Peptide
  • Lyophilized powder · laboratory research use only
Research-context information only. Glutathione is a research peptide. Protocols, doses, and reactions reported below come from published research and self-reported community sources. This article reports what has been documented, not what should be done. Consult a licensed physician for personal medical decisions.

Vial sizes listed by the vendor

Glutathione Vial Sizes, Prices & Lots

Glutathione vial sizes, prices and lots at Nura Peptide
SizeListWith our codePer mgAvailabilityLot · purity
1500 mg$55.00$38.50$0.03In stockGLTA-062026-1 · 99.89%

Prices checked today, 6:20 AM CT on Nura Peptide's site, with code thepeptidecatalog applied. Lot data from Nura Peptide's COA page, checked today, 7:57 PM CT. Sizes not re-checked in the last 7 days are hidden. The vendor's checkout is final.

Verified test results

Glutathione Certificate of Analysis

Nura Peptide publishes a third-party certificate for each lot of Glutathione 1500mg. The figures below are copied from Nura Peptide's current-lot listings, checked today, 7:57 PM CT (refreshed hourly; hidden if older than 24 hours). Match the lot number on the vial to its certificate.

All lots on record: Nura Peptide COA library. How to check one: how to verify a peptide COA.

Glutathione Dosing in Clinical Research

Antioxidant / Immune / Detox

Educational reference only. Individual responses vary. Consult healthcare provider before use.

Vial Size
600 mg or 1,500 mg lyophilized vial
Reconstitution
3 mL BAC water (1,500 mg vial → 500 mg/mL); scale down for 600 mg vials
Dose
200-600 mg per session (community IM range)
Timing
AM
Frequency
2-3x per week
Duration
Continuous (no required cycle)
Protocol Notes
Injectable or IV bypasses poor oral bioavailability. Also available as buccal strips (sublingual absorption) for a needle-free alternative. Often stacked with NAD+ for synergistic antioxidant and cellular energy support. See the reconstitution guide for the full 600 mg + 1,500 mg mixing charts.

Why This Dosing Protocol

Why injectable/IV over oral? Oral glutathione is degraded by GI peptidases and has minimal systemic bioavailability. IV and injectable routes deliver GSH directly into the bloodstream. Buccal strips offer a needle-free middle ground via sublingual absorption.

Why 200–600 mg? IV clinical protocols typically use 600–1200 mg per session. Injectable subcutaneous doses of 200 mg 2–3x/week approximate the weekly exposure from periodic IV infusions while fitting a home-use protocol.

Why 2–3x per week? GSH has a relatively short plasma half-life (~1.6 hours after IV). Repeated dosing maintains elevated systemic levels. Cycling 8 weeks on, 4 off follows general peptide cycling convention.
Full Dosing GuideReconstitution CalculatorCycle Cost Calculator

How Glutathione Works

Endogenous Tripeptide Antioxidant

Target → Electron Donation → Detox & Immune Modulation → Outcomes

1
Target

Reactive Oxygen Species (ROS) and Electrophilic Toxins

Glutathione (GSH) is a tripeptide — glutamate-cysteine-glycine — present in every cell. It targets reactive oxygen species (superoxide, hydroxyl radicals, hydrogen peroxide) and electrophilic xenobiotics that would otherwise damage DNA, proteins, and lipid membranes.

2
Cellular Signal

Electron Donation → Antioxidant Recycling → Phase II Conjugation

GSH donates electrons to neutralize free radicals via glutathione peroxidase (GPx), oxidizing to GSSG. Glutathione reductase recycles GSSG back to GSH using NADPH. Simultaneously, glutathione S-transferase (GST) conjugates toxins to GSH for Phase II liver elimination. GSH also regenerates oxidized vitamins C and E back to their active forms.

3
Systemic Effect

Reduced Oxidative Stress + Enhanced Detox + Immune Modulation

Reduces circulating oxidative stress markers (8-OHdG, MDA, F2-isoprostanes). Supports T-cell proliferation and NK cell cytotoxicity — lymphocytes require high intracellular GSH for optimal function. Enhances hepatic detoxification capacity for drugs, heavy metals, and environmental toxins.

4
What You Notice

Energy + Skin Brightening + Immune Resilience (2–8 Weeks)

Improved energy and recovery are commonly reported within 2–4 weeks of injectable use. Brighter, more even skin tone typically emerges at 4–8 weeks (glutathione inhibits tyrosinase, reducing melanin overproduction). Better immune resilience — fewer or shorter colds — is reported during cold and flu season. IV users often report immediate clarity.

What Makes This Peptide Different

Glutathione is the only endogenous tripeptide antioxidant that simultaneously regenerates other antioxidants (vitamins C and E) while serving as the primary substrate for Phase II liver detoxification. Unlike supplemental antioxidants that work in one compartment, glutathione operates inside every cell. The clinical challenge is bioavailability — oral GSH is largely destroyed in the GI tract, making injectable, IV, and buccal strip delivery the preferred research formats.

Technical specifications

Glutathione chemical & analytical data

Sold by Nura Peptide as
Glutathione 1500mg
Form
Lyophilized (freeze-dried) powder in a sealed vial
Presentation
1500 mg
Purity on current lots (COA)
99.89%
Testing laboratory
Freedom Diagnostics Testing
Regulatory status
Research compound; research-grade vials are not FDA-approved.

Glutathione Reconstitution Calculator

Dilution math and unit conversions. Prefilled using a common vial size for this peptide.

Open calculator

Storage & Handling

Storage at a glance

Proper storage temperatures, shelf life, reconstitution best practices, and travel tips for lyophilized and reconstituted peptides.

Powder: Freezer
1+ year at -20°C
Reconstituted: Fridge
4 weeks max at 2-8°C
View Complete Storage Guide

Handling specifics

Educational overview on storage, labeling, and traceability considerations for lab environments. Consult primary literature and vendor documentation for specifics.

Powder storage (very stable)
  • Freezer (-20°C): 1+ year
  • Refrigerator (2-8°C): 1-3 months
  • Room temperature: 2-3 weeks (emergency only)
Reconstituted storage (fragile)
  • MUST refrigerate at 2-8°C
  • 4-week maximum shelf life
  • NEVER freeze after reconstitution
  • Use bacteriostatic water for multi-dose

9 answers

Glutathione FAQ: Buying, COA, Storage & Research

What does glutathione do in the body?
Glutathione is a tripeptide (glutamate-cysteine-glycine) produced in every cell. It functions as the body's primary endogenous antioxidant — neutralizing reactive oxygen species, regenerating vitamins C and E, and serving as the main substrate for Phase II liver detoxification. Levels decline with age, illness, and environmental toxin exposure.
How does injectable glutathione compare to oral supplements?
Oral glutathione has poor bioavailability — it is largely broken down in the GI tract before reaching systemic circulation. Injectable and IV forms bypass this problem entirely, delivering glutathione directly into the bloodstream. Buccal (sublingual) strips offer a middle ground with better absorption than oral capsules. IV infusion protocols in clinical settings typically use 600–1200 mg per session.
What is a standard injectable glutathione protocol?
Common research protocols use 200–600 mg administered subcutaneously or intramuscularly 2–3 times per week. IV infusion clinics typically administer 600–1200 mg per session, often as part of a "Myers cocktail" or standalone push. Protocols generally run 8 weeks on, 4 weeks off, though some clinical applications use continuous dosing.
Are there side effects associated with glutathione injections?
Injectable glutathione is generally well-tolerated. Reported side effects are uncommon and typically mild — injection site discomfort, occasional bloating, or rare allergic reactions. IV glutathione at high doses may cause transient cramping. Long-term safety data for injectable glutathione supplementation remains limited compared to its extensive IV clinical use.
How long until results are noticeable?
Improved energy and recovery are commonly reported within 2–4 weeks of consistent injectable use. Skin brightening and more even tone typically emerge at 4–8 weeks. Immune resilience improvements may take 6–8 weeks to become apparent. IV infusion users often report immediate energy and clarity benefits within hours of a session.
Can glutathione be stacked with NAD+?
Yes, glutathione and NAD+ are frequently combined in longevity and anti-aging protocols. The rationale is complementary — NAD+ restores cellular energy and sirtuin-mediated DNA repair, while glutathione handles oxidative stress reduction and detoxification. Some IV clinics administer both in the same session. No negative interactions have been reported in research literature.
How long does reconstituted peptide last?
Once mixed with bacteriostatic water, peptides remain stable for up to 4 weeks when refrigerated at 2-8°C (36-46°F). Unopened powder can last 1+ year in the freezer. Get our complete Storage & Travel Guide.
Is this peptide legal to purchase?
Peptides sold "for research purposes only" are legal to purchase in the US, but are not FDA-approved for human use outside of specific medical applications. Always consult a healthcare provider before use.
New to peptides?
Take our Peptide Match tool to find the best peptide for your goals. You can also read our Complete Guide to Peptides to learn the basics.

Glutathione Research Articles

dosing

Glutathione Dosage Chart: IV, Injectable & Strips

Oral glutathione is mostly destroyed in the gut -- three delivery routes that actually work, with protocols for each.

reconstitution

Glutathione Reconstitution: 1500mg + 3mL Chart

300mg = 100 units. Glutathione uses far larger volumes than most peptides — dilution charts for 600mg and 1,500mg vials, syringe math, and storage.

buying-guide

Buy Glutathione: Compare 4 Vendors, From $15

Compare 4 Glutathione vendors side by side: from $15 a vial, best value $0.01/mg. Codes save up to 30%. Vial sizes, COA status, real cost per week.

results

Glutathione Results: Week-by-Week Timeline

IV users report energy changes in days; skin brightening peaks at 8-12 weeks. Full glutathione timeline by delivery route and use case.

Compare Glutathione Vendors Before You Buy

Disclosure: we may earn affiliate commission from qualifying purchases. Educational information only — not medical advice.