Buy glutathione peptide for research: Real Peptides lists 600mg for $40.80 with a per-lot COA, free US shipping over $250 and a 4.2/5 Trustpilot score.
Glutathione research peptide — a major antioxidant studied for oxidative-stress support. Lab tested, COA published.
Sold and shipped by Real Peptides. Shipping times, returns and regional restrictions are set on the vendor’s page; most US orders arrive in 1–3 business days in discreet packaging.
We only list products where the vendor publishes a batch-specific certificate of analysis from a third-party lab. Check the COA on the vendor’s page before ordering.
Every pick has a batch-matched certificate of analysis we can read.
We check that real potency matches what the label promises.
Simple, transparent formulas — no mystery fillers or additives.
Scored on real cost per serving, not just sticker price.
Ranked by published COA, potency accuracy and price per mg.
Glutathione research peptide — a major antioxidant studied for oxidative-stress support. Lab tested, COA published.
Epithalon (epitalon) is a tetrapeptide studied for telomerase activation and aging biology.
MOTS-c is a mitochondrial-derived peptide studied for metabolic and exercise-capacity research.
NAD+ research peptide in a multi-dose vial. Independent lab tested with COA published per lot. Ships from US stock.
NAD+ in a 1000 mg liquid spray format. Lab tested per lot with COA published. Ships from US stock.
| Product | Form | Strength | Testing | Shipping | Price |
|---|---|---|---|---|---|
| Real Peptides Glutathione Peptide | Lyophilized powder | 600mg | Third-party COA | — | $40.80 |
| Real Peptides Epithalon Peptide (10mg) | Lyophilized powder | 10mg | Third-party COA | — | $24.00 |
| Real Peptides MOTS-c Peptide | Lyophilized powder | 10mg | Third-party COA | — | $43.20 |
| Real Peptides NAD+ Peptide (Multi-Dose Vial) | Lyophilized powder | — | Third-party COA | US stock | $60.00 |
| Real Peptides NAD+ Peptide Liquid Spray (100 | Liquid spray | 1000mg | Third-party COA | US stock | $120.00 |
| Product | Vendor | Our score |
|---|---|---|
| Glutathione Peptide | Real Peptides | 4.2 |
| Epithalon Peptide (10mg) | Real Peptides | 4.2 |
| MOTS-c Peptide | Real Peptides | 4.2 |
| NAD+ Peptide (Multi-Dose Vial) | Real Peptides | 4.2 |
| NAD+ Peptide Liquid Spray (1000mg) | Real Peptides | 4.2 |
Real Peptides on Trustpilot: 4.2/5 from 85 reviews (last 12 months), checked Nov 2026 · read them on Trustpilot
What Real Peptides customers say on Trustpilot (5★ 76% · 4★ 5% · 3★ 0% · 2★ 1% · 1★ 18%)
Summary of the reviews written by our editors; the reviews themselves are on Trustpilot.
Ratings are our editors’ scores from one public rubric (COA, price per mg, delivery, returns, vendor reputation). They are not customer reviews. How we review
To buy glutathione peptide through this site, there is one listed vendor: Real Peptides, at $40.80 for a 600mg vial of lyophilized powder with a third-party COA published per lot. Orders over $250 ship free within the US. That is the whole offer, and this page explains what to check before you place it.
The item mentioned is intended for research purposes exclusively and cannot be consumed by humans. Glutathione in this particular form has not been approved by the FDA, and no implication to use it on oneself can be made. I put together pricing, COAs and vendor comparisons specifically for laboratory buyers, and that is the context of this page.
Real Peptides is referred to as the only vendor for glutathione peptide on this website. We have chosen to mention just one vendor instead of providing a lengthy table, as we clearly describe vendors about their products, prices, and COA practices based on their advertisement.
The vendor's own listing names two limitations: research use only, and that glutathione is not an NAD+ product but a related longevity compound. Buyers who came looking for NAD+ should see the glutathione vs NAD+ page first.
The $40.80 price includes the sealed 600mg vial and access to the lot's COA, and nothing else. There is no solvent, no kit, no consultation and no human-use guidance, which is what you should expect from a research vendor in 2026.
At about 6.8 cents per milligram, glutathione is the cheapest research compound on this site by weight. A clinic glutathione injection or drip is a different purchase entirely: a medical service priced by each clinic, with screening and staff time included. The glutathione injection cost page explains the gap.
Before making any payment, it is crucial to check if there is a Certificate of Analysis (COA) for the specific lot that you will be receiving which needs to confirm that particular lot. Real Peptides issues a COA for each lot, so it is advisable to ask the company about the lot in case it is not specified on the website.
If you happen to acquire glutathione peptide and the return vial has a number with no valid certificate, establish contact with the seller before using the product for any research activity. The customer reviews suggest that the seller is one of the quickest to replace products.
The arrival checks are covered on our glutathione storage page.
Real Peptides holds a 4.2 out of 5 rating on Trustpilot from 85 reviews in the last 12 months, checked in November 2026. Recurring positive themes are fast support, quick replacements or refunds, and praise for quality and prices.
It's also necessary to take note of general complaints regarding leaking or insufficient products, wrong labels and delivery problems. In the case of glutathione powder, the wrong labeling issue is more pertinent. This is where checking the lot number mentioned earlier can be of assistance. Lastly, if the shipment includes one of the NAD+ liquid sprays, make sure to check it for any leaking when it arrives.
The free-shipping line is $250, and glutathione alone reaches it at seven vials ($285.60). Six vials total $244.80 and still pay shipping.
| Add-on | Price | Running total with one glutathione vial |
|---|---|---|
| NAD+ Peptide (Multi-Dose Vial) | $60.00 | $100.80 |
| NAD+ Peptide Liquid Spray (1000mg) | $120.00 | $220.80 |
| MOTS-c Peptide (10mg) | $43.20 | $264.00 |
| Epithalon Peptide (10mg) | $24.00 | $288.00 |
Buy only what a project will use. These related compounds are compared on our longevity research compounds page.
Buying a research-use product means buying a chemical for laboratory work, not a medicine and not a supplement. FDA's August 2026 warning letters to five online peptide vendors made clear that the agency looks at the whole website, and that dosing guidance or treatment claims can turn a "research only" product into an unapproved drug in its eyes.
Therefore, this website and careful suppliers will provide you with the product, pricing and paperwork but that’s all to their involvement. Anyone wanting to buy glutathione for the sake of their health should contact their physician first instead of buying a research product.
Discounts shown are real: the vendor’s own sale price, or how much cheaper per mg a product is than the average of the vendors on this page.