Biomed Peptides Logo
    Back to blog

    Glutathione Injection: A Sourcing Guide for Licensed Practices

    Short answer: Glutathione is a tripeptide, γ-L-glutamyl-L-cysteinylglycine, with molecular formula C10H17N3O6S and a molecular weight of about 307.33 g/mol (PubChem CID 124886, CAS 70-18-8) (PubChem). For glutathione injection supplies, clinics usually stock it as a lyophilized powder in a sealed vial, then prepare it under the prescriber's order and their compounding pharmacy's guidance. FDA's current 503A nominations list puts Glutathione in category 1 (under evaluation) (FDA). Biomed Peptides lists GLUTATHIONE 600 mg and GLUTATHIONE 1500 mg vials for verified, licensed providers only.

    This guide covers sourcing: what the compound is, its regulatory context, vial formats, storage, documentation, and what affects provider pricing. It doesn't cover administration. That comes from the prescriber.

    What is glutathione?

    Structure

    ChEBI, as quoted in PubChem, describes glutathione as "a tripeptide compound consisting of glutamic acid attached via its side chain to the N-terminus of cysteinylglycine" (PubChem). That side-chain (gamma) linkage is why you'll see the systematic name γ-L-glutamyl-L-cysteinylglycine. The cysteine residue carries a free thiol (–SH) group, which matters for handling.

    Attribute Value
    Name Glutathione (reduced), GSH
    Systematic name γ-L-glutamyl-L-cysteinylglycine
    Residues 3 (Glu, Cys, Gly), gamma-linked Glu
    Molecular formula C10H17N3O6S
    Molecular weight ≈307.33 g/mol
    CAS (as listed in PubChem) 70-18-8
    PubChem CID 124886

    Reduced vs. oxidized glutathione

    "Glutathione" on a label normally means the reduced form (GSH). Two GSH molecules joined through a disulfide bond form glutathione disulfide (GSSG), a separate compound with formula C20H32N6O12S2 and a molecular weight of about 612.6 g/mol (PubChem). Bachem's handling guide notes that free cysteine thiols "will be rapidly oxidized to the disulfides at pH > 7" in solution (Bachem). For sourcing, that means two things: the COA should state which form was assayed, and it's worth asking whether oxidized glutathione is reported separately.

    Regulatory context: FDA's 503A nominations list

    Under section 503A, a bulk drug substance generally has to have a USP or NF monograph, be a component of an FDA-approved drug, or appear on FDA's 503A bulks list. FDA also requires a valid COA and an FDA-registered (section 510) manufacturing establishment (FDA).

    • FDA's list of substances nominated under 503A (updated May 14, 2026) names Glutathione in Category 1: Bulk Drug Substances Under Evaluation (FDA nominations list).
    • FDA says it doesn't intend to take action against a compounder for using a category 1 substance "provided that the conditions described in the guidance document are met" (FDA).

    Category 1 isn't the same as being on the final 503A bulks list, and these pages change. Confirm current status with your compounding pharmacy. For background, see what a 503A pharmacy is and our guide to working with a peptide compounding pharmacy.

    How glutathione is supplied to clinics

    600 mg and 1500 mg lyophilized vials

    The Biomed Peptides lyophilized catalog lists two strengths:

    • GLUTATHIONE 600 mg
    • GLUTATHIONE 1500 mg

    Vial strength is the amount of glutathione in the sealed vial. It doesn't change the molecule. Pick the strength that fits the prescriber's orders and your vial-use policy, and make sure the vial label, the COA, and your records all show the same strength.

    Storage and handling

    • Keep vials sealed, dry, and protected from light. Follow the product label first.
    • Bachem recommends keeping peptides as a lyophilizate in a tightly closed container for longer storage, below −15 °C, with 4 °C acceptable short term. It also says peptides containing Cys have limited shelf lives (Bachem).
    • Peptides tend to be hygroscopic. Let a cold vial reach room temperature before you open it (Bachem).
    • Because the thiol oxidizes in solution, treat any reconstituted vial as short-life inventory. Bachem advises against storing peptides in solution (Bachem). For opened multi-dose vials, CDC (citing USP <797>) says to date the vial and discard it within 28 days unless the manufacturer states another date (CDC).

    Our lyophilized peptides storage guide and bacteriostatic water for peptides cover the rest of the workflow.

    Documentation to request

    Ask for these with every glutathione lot:

    • Lot-specific COA with identity, assay or purity stating the form tested (reduced glutathione), and related substances where reported
    • Endotoxin results where applicable
    • Manufacturer and site information, since 503A requires a section 510-registered establishment for bulk drug substances (FDA)
    • Labeled storage conditions and expiration

    See our peptide COA and third-party testing guide for how to read each section.

    Glutathione injection price: what drives provider pricing

    We don't publish prices here, and wholesale pricing is visible only to approved accounts. In general terms, glutathione injection price for a practice depends on:

    • Vial strength. A 1500 mg vial contains more product than a 600 mg vial, so it costs more per vial.
    • Documentation depth. Lot-specific identity, purity, and endotoxin testing add cost, and they're worth paying for.
    • Order profile. Office-use stock and patient-specific fulfillment are priced differently.
    • Pharmacy preparation. If your compounding pharmacy prepares the final product, its preparation and testing are part of the total cost.

    When you compare quotes, compare like for like: same strength, same form (reduced glutathione), and the same documentation on the COA.

    Order glutathione for your practice

    Biomed Peptides supplies physician-use product only to licensed healthcare providers. We don't sell to patients or consumers. Apply for provider access to view GLUTATHIONE 600 mg and 1500 mg pricing and COAs, or browse the lyophilized catalog to plan your formulary.

    FAQ

    What is glutathione?

    Glutathione is a tripeptide, γ-L-glutamyl-L-cysteinylglycine, made of glutamic acid, cysteine, and glycine. PubChem lists its molecular weight as about 307.33 g/mol (CID 124886).

    What's the difference between reduced and oxidized glutathione?

    Reduced glutathione (GSH) has a free thiol group. Two GSH molecules joined by a disulfide bond form glutathione disulfide (GSSG), a separate compound with a molecular weight of about 612.6 g/mol.

    What is glutathione's status on FDA's 503A list?

    FDA's 503A nominations list (updated May 14, 2026) names Glutathione in category 1, bulk drug substances under evaluation. That isn't the same as being on the final 503A bulks list. Confirm current status with your compounding pharmacy.

    What glutathione vial sizes does Biomed Peptides carry?

    The catalog lists GLUTATHIONE 600 mg and GLUTATHIONE 1500 mg lyophilized vials.

    What affects glutathione injection price for a practice?

    Vial strength, the depth of lot documentation, whether the order is office-use or patient-specific, and any pharmacy preparation. Approved accounts can see current pricing after applying at /apply.

    Sources

    Frequently Asked Questions

    Quick answers related to this article.

    Back to all articles