glutathione is a tripeptide antioxidant The benefits of Glutathione Supplements: A Complete Guide
Description
Methionine Methionine is an essential amino acid found in lean meats, dairy, eggs, and nuts

Mar 2010;6(1):74-5

The reality is it's here
E.et al (2018)

5mg / 10mg
At the lowest concentration (HA + 5% GSH), antioxidant capacity was restored and intracellular ROS/RNS was decreased