Whats the FDAs stance on them, and is that changing
Consult a qualified healthcare professional before starting any new supplement, particularly if you have a medical condition, are taking medications, are pregnant or nursing, or are under the age of 18
Chemical penetration enhancers including propylene glycol, dimethyl sulfoxide (DMSO), and various terpenes increase GHK-Cu skin penetration by 2-4 fold, though potential irritation risks require careful optimization
Sleep apnea, a condition where breathing stops and restarts intermittently throughout sleep, has been associated with infertility in both men and women
10.1179/acb.2007.62.s1.031 61 SeiwerthS.BrcicL.VuleticL
Elderly patients tend to have a greater frequency of decreased hepatic, renal, or cardiac function, and also have concomitant disease or receiving other drug therapy