This breadth of action may explain why some users respond better to copper peptides when minoxidil hasn't worked
Regarding papaverine, a direct-acting vasodilator, when injected intraperitoneally in noise-exposed Wistar rats significantly decreases the apoptotic death of hair cells resulting in significantly smaller threshold shifts when compared to noise-exposed untreated animals (Kum et al., 2018)
Blood 112 , 13251328 (2008)
Glutathione performs a number of important functions, including: making DNA (the building blocks of proteins and cells), supporting immune function, breaking down some free radicals, helping certain enzymes function, regenerating vitamin C and E, forming sperm cells, helping the liver and gallbladder deal with fats, and assisting regular cell death (apoptosis)