No significant adverse effects have been reported at standard doses
Molecular and cellular processes, such as myofibroblast/mesenchymal transition, myofibroblast activation and uncontrolled proliferation, endoplasmic reticulum stress, altered expression of growth factors, and oxidative stress, link PF to lung cancer and increase the risk of cancer development by 7%20% ( In addition, lung damage and fibrosis are frequently observed in tuberculosis (Ravimohan et al., 2018)
This search often leads athletes and coaches down paths of complex nutritional science, advanced training modalities, and sometimes, into the gray area of performance-enhancing substances
What we really have for injectable GHK-Cu is a strong set of early signals, not human proof
Niacin in the central nervous system: an update of biological aspects and clinical applications
doi: 10.1016/j.cophys.2022.100483