GLUTATHIONE Glutathione Peptide · Antioxidant Tripeptide · 500mg / 1500mg

Blank Peptides ships glutathione in 500mg and 1500mg vials. Both are far bigger fills than anything in the peptide range, because glutathione work runs at a metabolic scale rather than a receptor one and the vial has to keep up, and the 1500mg is there for protocols that would otherwise open three of the smaller vials. It comes out of our cGMP labs in the USA with a lot-matched certificate of analysis. No prescription, and processing time is within 1 business day.

Glutathione is a tripeptide of glutamate, cysteine and glycine, present in nearly every cell and central to antioxidant defence. Its reduced form neutralises reactive oxygen species; the oxidised dimer is the spent version. Research covers oxidative stress models, phase II detoxification pathways and immune cell function, in culture and in animals.

Yes. Purity is greater than 99%, established by in-house HPLC and mass spectrometry and independently confirmed at Freedom Diagnostics or Horizon Analytical. Bacterial endotoxin testing runs on each batch at release. The certificate is tied to your lot, which matters for glutathione because the reduced to oxidised ratio is a real quality variable.

Glutathione is an exception to our 1mL per 10mg standard, alongside NAD+, because the mass per vial is far higher than a signalling peptide. Larger volumes are used instead. A common laboratory approach puts 5mL of bacteriostatic water into the 500mg vial, giving 100mg/mL. For the 1500mg, work back from the concentration your protocol wants rather than a fixed volume, since glutathione stays in solution well past 300mg/mL, and check the headspace first because the bigger fill leaves less room. Add the solvent gradually and swirl until fully clear.