What's more, while GHK-Cu is well-studied as a topical skin care ingredient, it is currently much less evidenced as a systemic injectable treatment
The quality of ingredients directly impacts your results
McGuire is a chief medical resident at University of Utah Health, where he works with patients rehabilitating from cancer and injuries, but he had never heard of the substance, called BPC-157
Reduced production of TNF-, IL-6, IL-1, and IL-8, as well as downregulation of iNOS, reduces systemic low-grade inflammation and limits inflammatory spillover to the CNS [153, 154]
BMC Complement Med Ther 20:25
A five-year, randomized, double-blind, placebo-controlled trial in healthy Danish older people (ages at inclusion, 60-74 years) found that selenium supplementation (100-300 g/day) had little-to-no impact on circulating levels of antioxidant enzymes, including GPx (166)