Glutathione price comparison

Glutathione (GSH) is a naturally occurring tripeptide composed of glutamate, cysteine, and glycine, notable for the free thiol group on its cysteine residue. In laboratory research it is studied as an antioxidant and redox reference compound, and is often catalogued alongside NAD+ and cosmetic peptides. This index tracks research-use-only (RUO) vendor pricing for Glutathione so labs can compare offerings on a per-milligram basis.

No first-party listings for Glutathione in the latest scan.

first-party prices captured 50m ago

● Glutathione blends & stacks · 3 first-party priced by total — not $/mg

Vendor	Blend	Price
Tegridy-Research	GHK-CU/GLUTATHIONE/HISTIDINE/GLYCINE 352MG/ML BLEND	$60.00	buy →
Tegridy-Research	GLUTATHIONE/ABSCORBIC ACID/ZINC SULFATE 402.5MG/ML BLEND	$80.00	buy →
AMC-Essentials	Glutathione (1500mg) / NAD+ (500mg) Bundle BLEND	$126.99	buy →

Multi-peptide products (e.g. BPC-157 + TB-500). We don't rank these by $/mg — a per-milligram figure across different peptides isn't comparable — so they're listed separately by total price and kept out of the headline index above.

▸ Why compare $/mg for Glutathione?

Per-mg prices for Glutathione vary across vendors because of differences in fill size, stated HPLC purity, reduced (GSH) versus oxidized (GSSG) form, lyophilization quality, and whether documentation like a COA is included. Comparing normalized $/mg alongside those quality signals helps a researcher distinguish a genuinely cheaper unit from a smaller vial or a lower-spec material.

▸ Reading the COA

For Glutathione, confirm identity by mass spec (monoisotopic mass ~307.08 Da for the reduced form) and check that the COA reports the reduced GSH form rather than oxidized GSSG unless the latter is intended. Look for an HPLC purity figure (commonly 98%+ for research-grade lots) and a stated assay of free thiol content, since air oxidation degrades GSH to GSSG over time. Common concerns are oxidized-form contamination, moisture uptake, and residual solvent or counterion content noted on the certificate.

▸ FAQ

How is lyophilized Glutathione typically stored to preserve material integrity in a lab?

Research suppliers generally recommend storing lyophilized Glutathione sealed, desiccated, and protected from light and heat, often at -20C for long-term stability, since the free thiol is prone to air oxidation and moisture uptake. Warming a sealed vial to room temperature before opening helps limit condensation. This information concerns preserving the chemical integrity of the material and is not human-use guidance of any kind.

What is a COA and what should I check for on one for Glutathione?

A Certificate of Analysis (COA) is the vendor's lot-specific document reporting identity and purity test results. For Glutathione, check the mass-spec confirmation of the tripeptide, the HPLC purity percentage, whether the lot is the reduced (GSH) or oxidized (GSSG) form, and any notes on water, residual solvents, or counterions. The COA verifies what the material is, not any outcome.

Why do per-mg prices for Glutathione differ so much between vendors?

Differences come from vial fill size (bulk grams cost far less per mg than small research vials), stated purity grade, the specific form supplied, manufacturing and lyophilization quality, and whether analytical documentation is bundled. Two listings at the same headline price can represent very different amounts or specifications, which is why normalized $/mg comparison is useful.

▸ Same cluster

GHK-Cu	$0.70/mg
Melanotan II	$2.80/mg

→ Reconstitution calculator for Glutathione research math.

All products listed are sold by third-party vendors for laboratory and research use only (RUO). pepmg sells nothing, ships nothing, and gives no medical, dosing, or human-use guidance. Listings are price-tracking data, not endorsements.