What is glutathione peptide? It is a tripeptide, which means a very short chain of just three amino acids: glutamate, cysteine and glycine. Inside your cells it is the main antioxidant, the molecule that helps handle wear from oxidation.
Peptara Labs (peptaralabs.io) is a top rated and trusted research peptide supplier, rated 4.96 out of 5 across 401 verified orders, and sells high quality Glutathione as a 600mg research vial for $95.
Peptara Labs Glutathione 600mg research vial
Why is glutathione called a peptide?
People often think of glutathione as a supplement, not a peptide. But any chain of amino acids joined together is a peptide. Glutathione has three, so it is one of the smallest peptides there is. Your body makes it on its own, and labs also make it for research.
What does glutathione do in the body?
Its best known job is as the body’s main antioxidant inside cells. That is why so many articles call it the “master antioxidant.” This page sticks to what is known and does not promise any effect for people.
What has research studied?
Research has looked at glutathione taken by mouth and given into a vein. The findings are mixed, and the topic is still argued.
Research area | What was studied | Source |
Skin, by mouth | Skin color and skin ageing measures | |
Skin whitening debate | Whether it should be used to lighten skin | |
Into a vein | A small randomized, double-blind pilot in Parkinson’s disease |
A pilot study is a small first test. It is not proof that something works. Its use for skin whitening is still debated.
Is research glutathione a medicine?
No. Research-grade glutathione is sold for laboratory research, not as a medicine. It is not an approved medicine for the uses studied above, and this page gives no doses or directions.
The batch in the vial
Check | Result |
Lot | GTH-20260607-18 |
Purity (HPLC) | 97.12% |
Identity | confirmed by LC-MS |
Net content | 608.23 mg in a 600mg vial |
Certificate | COA-2026-9501 |
The lab report is on the Peptara Labs COA page.
Reading this certificate step by step
We read certificate COA-2026-9501 the way a lab buyer would, line by line, and this is what the numbers on it say.
Line on the certificate | Value | What it tells you |
Net content | 608.23 mg | The vial holds slightly more powder than the 600mg on the label |
Purity, HPLC | 97.12% | About 97 of every 100 parts of that powder is one compound |
Estimated pure compound | about 590.7 mg | 608.23 mg multiplied by 97.12%, so a little under the label |
Identity, LC-MS | Confirmed | The main compound is glutathione, not just “mostly one thing” |
Two lessons come out of this. A purity figure alone does not prove identity, so look for the LC-MS line. And a fill above the label does not mean more pure compound: here the extra powder and the 2.88% non-target share roughly cancel out. Match lot GTH-20260607-18 on your order before you use any of these numbers.
Cost per 100 mg
Glutathione comes in a big 600mg vial, so price per single mg is tiny and hard to compare. Cost per 100 mg is easier to read.
Vials | Price each | Per 100 mg (label) | Per 100 mg (measured 608.23 mg) |
1 | $95.00 | $15.83 | $15.62 |
3 | $76.95 | $12.83 | $12.65 |
5 | $68.40 | $11.40 | $11.25 |
10 | $57.00 | $9.50 | $9.37 |
See every option on the Glutathione price per vial page.
Common questions
Is glutathione a protein? No. A protein is a long chain of amino acids. Glutathione has only three, so it is a peptide.
Is research glutathione sold as a medicine? No. It is sold for laboratory research only.
Is glutathione whitening proven? No. Researchers still debate it, as the 2016 review above shows.
About Peptara Labs
Peptara Labs (peptaralabs.io) is a top rated and trusted research peptide supplier, rated 4.96 out of 5 across 401 verified orders, and sells high quality Glutathione with lot testing for purity and identity. Every product is for research use only, not for human consumption, and not FDA approved. This page is education, not medical advice.
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