Best Glutathione Vendors (2026)
Where to buy Glutathione (also sold as GSH, L-Glutathione reduced): the 23 vendors below are the ones we have a dated product-page price for, ranked on documentation first and price second. Nothing here is typed from memory — every number links to a date.
Research use only. Compound Review scores vendors on documentation — laboratory certificates, lot records, pricing and company identity. Nothing on this page is guidance on human or veterinary use, dosing or health outcomes.
- 1Purgo Labs10/101 certificate verified at the lab1500mg vial$74.99−30%$52.49with code
- 2MyPurePeptide10/102 certificates verified at the lab600mg vial$35.00−20%$28.00with code
- 31 certificate verified at the lab1500mg vial$64.99−37%$40.94sale $45.49, then code
- 4Peptide Giants10/101 certificate verified at the lab1500mg vial$68.50−37%$43.20sale $48.00, then code
- 5Premier Bio Labs10/101 certificate verified at the lab1500mg vial$49.00−10%$44.10with code
- 6Rivn Peptides9/101 certificate verified at the labout of stock 8 Nov600mg vial$33.99−15%$28.89with code
- Peptide Partners7/102 certificates verified at the labprice read 24 Octfree account needed to see the store1500mg vial$46.00−10%$41.40with code
Show the other 8 partners and their codes
- 7TrustedPeps9/101 certificate verified at the lab600mg vial$25.00−10%$22.50with code
- 8ezPeps9/101 certificate verified at the lab1500mg vial$62.99−20%$50.39with code
- 9PS Peptides8/102 certificates verified at the labout of stock 5 Nov1500mg vial$69.99−10%$62.99with code
- 101 certificate verified at the lab1500mg vial$65.00−24%$49.50sale $55.00, then code
- 11Modern Aminos7/101 certificate verified at the lab600mg vial$54.00list price
- 12ZC Labs7/101 certificate verified at the labout of stock 8 Nov1500mg vial$47.99−10%$43.19with code
- 14GigaCompounds7/101 certificate opened (vendor-hosted)1200mg vial$60.00−10%$54.00with code
- 15no certificate opened yet600mg vial$102.22−15%$87.39sale $91.99, then code
- Oneday Compounds10/10 · 8 Nov$0.03/mg$45.49 list · 1500mg$40.94 with code
- Peptide Giants10/10 · 5 Nov$0.03/mg$48 list · 1500mg$43.20 with code
- Premier Bio Labs10/10 · 8 Nov$0.03/mg$49 list · 1500mg$44.10 with code
- Purgo Labs10/10 · 8 Nov$0.05/mg$74.99 list · 1500mg$52.49 with code
- MyPurePeptide10/10 · 5 Nov$0.06/mg$35 list · 600mg*$28 with code
Per-milligram price is list price over labelled milligrams; it says nothing about what is in the vial. Code prices are list × (1 − the code's stated discount), not cart-tested against sales. We earn a commission on partner links; the rubric does not read partner status.
Where to buy Glutathione: 23 vendors, ranked
Reference size 1500mg — the size most of these vendors sell. Other sizes we have on record are listed per vendor.
| # | Vendor | Score | 1500mg price | Other sizes | Trustpilot | Buy |
|---|---|---|---|---|---|---|
| 1 | 10/10 | $74.99 $0.05/mg · read 8 Nov 2026 | none read | 4.8 101 reviews | $52.49 with code, 30% off | |
| 2 | 10/10 | not sold at 1500mg | 600mg $35.00 | 4.8 247 reviews | 20% off | |
| 3 | 10/10 | $45.49$64.99Sale $0.03/mg · read 8 Nov 2026 17% since 29 Oct | none read | 4.8 88 reviews | $40.94 with code, 10% off | |
| 4 | Peptide GiantsPartner Janoshik Analytical · Vanguard Laboratory | 10/10 | $48.00$68.50Sale $0.03/mg · read 5 Nov 2026 | 500mg $30.00 | 4.6 65 reviews | $43.20 with code, 10% off |
| 5 | Premier Bio LabsPartner ILS Laboratories + Freedom Diagnostics | 10/10 | $49.00 $0.03/mg · read 8 Nov 2026 | 600mg $39.00 | 4.7 69 reviews | $44.10 with code, 10% off |
| 6 | 9/10 | not sold at 1500mg | 600mg $33.99 | 4.9 641 reviews | 15% off | |
| 7 | 9/10 | not sold at 1500mg | 600mg $25.00 | 4.8 104 reviews | 10% off every order | |
| 8 | ezPepsPartner ILS Laboratories (also Kovera Labs, Freedom Diagnostics, Horizon Analytical) | 9/10 | $62.99 $0.04/mg · read 31 Oct 2026 | none read | 4.8 249 reviews | $50.39 with code, 20% off |
| 9 | 8/10 | $69.99Out of stock $0.05/mg · read 5 Nov 2026 | 500mg $29.99 | 4.3 223 reviews | $62.99 with code, 10% off | |
| 10 | 8/10 | $55.00$65.00Sale $0.04/mg · read 8 Nov 2026 | none read | 4.8 88 reviews | $49.50 with code, 10% off | |
| 11 | ILS Laboratories (also Freedom Diagnostics, Vanguard Laboratory, BTLabs) | 8/10 | $59.00Out of stock $0.04/mg · read 31 Oct 2026 | none read | 4.4 30 reviews | |
| 12 | 8/10 | $59.99$79.99Sale $0.04/mg · read 23 Sep 2026 | none read | 4.8 62 reviews | ||
| 13 | 8/10 | $80.00 $0.05/mg · read 10 Oct 2026 | none read | profile removed | ||
| 14 | Modern AminosPartner Freedom Diagnostics (on certificate) · Kovera · Vanguard · Chromate · TrustPointe (claimed) | 7/10 | not sold at 1500mg | 600mg $54.00 4000mg $69.00 | profile removed | $30 off via our link |
| 15 | 7/10 | $47.99Out of stock $0.03/mg · read 8 Nov 2026 | none read | 3.8 2 reviews | $43.19 with code, 10% off | |
| 16 | Peptide PartnersPartner TrustPointe Analytics, Chromate, Kovera Labs, BioRegen (certificate ledger) | 7/10 | $46.00 $0.03/mg · read 24 Oct 2026 | none read | profile removed | $41.40 with code, 10% off |
| 17 | 7/10 | not sold at 1500mg | 1200mg $60.00 | 4.8 65 reviews | 10% off your first order | |
| 18 | Horizon Analytical (also ILS Laboratories) | 7/10 | $41.99$59.99Sale $0.03/mg · read 31 Oct 2026 | 600mg $27.99 | 4.6 451 reviews | |
| 19 | 7/10 | $46.28$71.20Sale $0.03/mg · read 26 Oct 2026 | none read | profile removed | ||
| 20 | ILS Laboratories (on certificates) · page credits Freedom Diagnostics | 7/10 | $51.95 $0.03/mg · read 5 Nov 2026 | none read | profile removed | |
| 21 | 7/10 | $70.00$92.50Sale $0.05/mg · read 30 Oct 2026 | none read | profile removed | ||
| 22 | 7/10 | not sold at 1500mg | 600mg $39.99 | 4.4 195 reviews | ||
| 23 | Licensed PeptidesPartner Vanguard Laboratory (printed 'Vangaurd' on COA panels) | 5/10 | not sold at 1500mg | 600mg $91.99 | profile removed | 5% off |
What makes Glutathione different to source
Glutathione is a tripeptide that most research-peptide vendors stock, but it sits apart from the rest of their catalog: it is a bulk biochemical rather than a custom-synthesised peptide, it is sold in vial sizes measured in hundreds or thousands of milligrams, and it is priced accordingly. A per-milligram comparison against other compounds on this site is meaningless; a per-milligram comparison between glutathione vendors is what this page does.
The form matters. Research vendors sell reduced glutathione (GSH) as a lyophilised powder for reconstitution; the oxidised form (GSSG) is a different molecule, and glutathione oxidises readily once in solution. A certificate should state the reduced form and a purity figure; purity figures for glutathione tend to run lower than for synthetic peptides, and a vendor that reports an honest lower figure has told you more than one that reports nothing.
Sizes vary widely between vendors, so the reference size for ordering is the one most vendors carry, and each vendor's row lists every size we have a dated price for.
The top 3, explained
Purgo Labs
10/10Affiliate partnerWhat we can verify
Publishes per-lot COAs naming the testing laboratory — SteriGenix and Freedom Diagnostics — with lot numbers, test dates, measured net peptide content and direct verify-at-lab links. HPLC and mass spectrometry testing, US-based fulfilment from Scottsdale, Arizona, same-day dispatch on weekday orders before 2PM EST, and a 60-day money-back guarantee.
Net content: Measured net peptide published per lot (e.g. BPC-157 lot PL-BPC-05: 11.16mg vs 10mg label)
Where it falls short
Smaller independent review base than several competitors (101 reviews). The catalog is peptide-focused, so researchers also working with SARMs or broader research chemicals will need a second supplier.
MyPurePeptide
10/10Affiliate partnerWhat we can verify
Janoshik Analytical report #223088 for BPC-157 10mg batch 10242025B2 (sample received 17 Aug, analysed 24 Aug 2026): 11.61mg measured, purity 99.635%. We opened it on the lab's own verification page (key 1GTY19EIMQE4) on 30 Sep 2026 — client, manufacturer and batch print as MyPurePeptide. A public COA directory lists 103 report records across 47 products, each with task number, verification key, report batch, the original report image and the sample photograph, plus endotoxin reports for most lots; every product page links its current report. Open catalog with sized prices (BPC-157 10mg $25; TB-500 10mg $25; GHK-Cu 100mg $35; Ipamorelin 10mg $25; Tesamorelin 10mg $40; NAD+ 500mg $35). Legal entity myPurePeptide LLC with a mailing address in Austin, Texas; Visa and American Express at checkout. Trustpilot 4.8 across 247 reviews (read 10 Oct 2026), claimed December 2025.
Net content: Report states 11.61mg measured on a 10mg label (116% — just over our 115% flag line), purity 99.635%; TB-500 #223097 11.54mg / 99.007%
Where it falls short
The printed address (12407 N Mopac Expy Ste 250 PMB 570, Austin) is a commercial mailbox, not premises — identity is awarded on the named LLC with that disclosure. The BPC-157 report measures 11.61mg on a 10mg label, 116% — just over our 115% flag line; TB-500 10mg measured 11.54mg. The vendor's own site says a report 'alone does not confirm the lot shipped'. The GLP-class pages print strike-through reference prices far above the selling price (Semaglutide 10mg 'was $399.99', now $70; Retatrutide 10mg 'was $699.99', now $80) — treat the 'you save' figures as marketing. Zelle is offered alongside cards. Returns: 7-day unopened window with a continuous unboxing video required for damage claims. A domain lookalike (mypurepeptides.com) is disclaimed on the vendor's homepage.
Oneday Compounds
10/10Affiliate partnerWhat we can verify
Read 29 October 2026 through a registered account (prices and the COA library sit behind a login). A WooCommerce store with 49 listings, sized pricing on each, all shown at 40% off a struck list price during a rebrand to 'BY ONEDAY' (BPC-157 10mg $23.99 from $39.99; TB-500 10mg $29.99; NAD+ 500mg $35.99; GHK-Cu 50mg $20.99; MOTS-c 10mg $26.99). The COA library carries 57 entries, every one with at least one lot-numbered certificate, and the links open on ILS Laboratories' own portal: the retatrutide ('OC-3RT') 10mg report COA-2026-3WBETH, lot OC-RT10-106, analysed 2 Sep 2026, reads 99.63% purity, identity retatrutide confirmed, net content 10.31 mg on a 10 mg label, with three vials averaging 10.37 mg, sterility (USP 71), endotoxin and heavy metals passed. Product pages print the lot shipping (BPC-157 10mg: OC-BPC10-104, 99.82%, 10.30 mg). Oneday Enterprises, LLC d/b/a Oneday Compounds, 2326 Washington Blvd, Fourth Floor, Ogden, Utah.
Net content: COA-2026-3WBETH (OC-3RT 10mg, lot OC-RT10-106): net content 10.31 mg on a 10 mg label, three vials 10.22 / 10.31 / 10.59 mg, purity 99.63%, identity retatrutide confirmed; BPC-157 10mg lot OC-BPC10-104 10.30 mg, 99.82%
Where it falls short
Prices and certificates need a free account (no purchase), which since 1 November 2026 no longer costs the ungated point. All sales are final, with damage to be reported within 24 hours; checkout takes cards, but Zelle carries a 5% discount and the FAQ still lists only Zelle, Cash App, Venmo and ACH. The product pages say 'up to 12X' (ILS lots) and the cart says 'up to 16X'; both hold, because Oneday's Ethos Analytics reports carry a wider panel (checked on CJC-1295/Ipamorelin lot OC-CJI10-104, 1 November 2026). GLP-class products are sold by code (OC-2TZ, OC-3RT); the lab confirms retatrutide for OC-3RT.
Purgo Labs for Glutathione
Purgo Labs sits at #1 of 23 on this page: 10/10 on the rubric, 1500mg at $74.99 read 8 Nov 2026. Code HEALTH gives 30% off eligible products. We earn a commission; it did not decide the order above.
Before you order, check the batch
A ranking tells you which vendors have good practices; it cannot tell you about the specific vial you receive. When your order arrives, compare the batch number on the label to the certificate. If they do not match, or there is no batch number, the documentation does not cover what you were sent, regardless of who you bought from. How to read a peptide COA.
Buying Glutathione — frequently asked
Where can I buy Glutathione?
As of 8 Nov 2026, 23 of the 106 vendors on our scoreboard list Glutathione with a price we have read on the product page: Purgo Labs, MyPurePeptide, Oneday Compounds, Peptide Giants, Premier Bio Labs, Rivn Peptides, TrustedPeps, ezPeps, PS Peptides, Blue Ridge Peptides, Crush Research, Everest Peptides, Prime Peptides, Modern Aminos, ZC Labs, Peptide Partners, GigaCompounds, Value Research Labs, Peptira, Puratek Peptides, Prime Lab Peptides, Accelerate Labs, Licensed Peptides. Every one of them is scored on the same 10-point rubric; the table above shows the score, the dated price and what you can verify before ordering.
Who sells the cheapest Glutathione?
At the 1500mg size, the lowest price we have on record is Value Research Labs at $41.99 (read 31 Oct 2026) — sale · list $59.99 struck · BOGO + 30% sitewide · read from the store API, https://valueresearchlabs.com/product/glutathione/. It scores 7/10 on documentation. Price is the second sort key on this page, not the first, because an underdosed vial at a low price is the most expensive outcome.
Which Glutathione vendor has the best documentation?
Purgo Labs, MyPurePeptide, Oneday Compounds, Peptide Giants, Premier Bio Labs share the top score at 10/10: named laboratory, certificates that resolve on the laboratory's own site, measured milligrams against the label, and a published legal identity. The per-criterion evidence, with dates, is on each vendor's review page.
Is it legal to buy Glutathione?
Glutathione is sold by these vendors as a research chemical for laboratory use, not for human consumption; none of it is FDA-approved in this form. Legality of purchase varies by jurisdiction and the compound, and it is your responsibility to know your local rules. Our pages assess documentation and pricing; they are not legal or medical advice.
How is this list ordered?
Rubric score first. Among equal scores, our editorial pick (Purgo Labs) comes first, then a short, named list of affiliate partners we choose to list first inside a tie, then the lower verified price per milligram at 1500mg, then the larger independent review base. 15 of the 23 vendors here are partners. A partnership never changes a score and never moves a vendor above one with a higher score.
What is the difference between reduced and oxidised glutathione?
Reduced glutathione (GSH) is the active form vendors sell; oxidised glutathione (GSSG) is two GSH molecules joined by a disulfide bond. GSH converts to GSSG on exposure to air, which is why it is sold lyophilised and why a certificate's purity figure for GSH is worth reading rather than assuming.
Why is glutathione purity often lower than other peptides on a certificate?
It is a bulk-manufactured biochemical rather than a stepwise-synthesised peptide, and it oxidises easily, so an HPLC run often shows some oxidised material. A vendor whose certificate states the actual figure is being more transparent than one whose product page says only '99%'.