glutathione is an important peptide antioxidant Treatments 101: Part 1 — The Mother of All Antioxidants Glutathione! - PMC

Human data is still very limited, including small pilot work such as the knee pain survey of 16 patients, plus a few other early studies and reviews calling out the lack of large, rigorous trials

fat free diet needed for GLP1 meds to work:

Lipotropic injections: Benefits, side effects, dosage, and cost (Injection site reactions excerpt)

doi:10.1111/andr.12366

In addition, they investigated the suitability of L-K6 antimicrobial peptide to target the cell surface of MCF-7 cells

However, due to poor metabolic stability of angiotensin IV and many AnglV analogues, the inability of early analogues to penetrate the blood brain baixier, and the failure to identify the AT4 receptor, no pharmaceutical company has moved forward with their development