3 (a) The tripeptide glutathione acts as a cofactor in various Download Scientific Diagram L Glutathione Antioxidant Support Micro Balance Health Products 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 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