IT'S LANDED! We're the first in the UK to launch L Glutathione in a subcutaneous pen format. L Glutathione is often called the ultimate antioxidant. It's a tripeptide, basically a small molecule made Higher Strength L Glutathione Glutathione is such a critical soldier in our line of defense that our bodies make it themselves. We even have mechanisms that recycle and reuse it. But what happens when our toxic L glutathione 250 Mg L Glutathione vs. oxidized vs. Reduced Glutathione Chemical structure of tripeptides in glutathione. Download Scientific Diagram