is glutathione safe for long term use Randomized Clinical Trial of How Long-Term Supplementation Offers Protection from Oxidative Damage and Improves HbA1c in Elderly Type 2 Diabetic Patients 9 Health Benefits of Glutathione

Wang H, Yi X, Wang X, Yang Y, Zhang H, Wang H, et al

This facilitates formation of a new root cap after removal or damage of the previous root cap, which plays an important role in root growth providing root defense, participating in geotropic response, and possibly in other tropisms

"Stem cell, Granulocyte-Colony Stimulating Factor and/or Dihexa to promote limb function recovery in a rat sciatic nerve damage-repair model: Experimental animal studies."Annals of Medicine and Surgery71 (2021): 102917

While some foods like spinach, avocados, and asparagus contain glutathione, the body does not absorb it very efficiently from food sources

Andrologia 51(7):e13292 Kermani-Alghoraishi M et al (2010) The effects of acrylamide on sperm parameters and membrane integrity of epididymal spermatozoa in mice

reported in Nature (2004) that thymosin beta-4 promoted cardiomyocyte survival and improved cardiac function following experimentally induced infarction in mice