Relative contraindications requiring caution include active or suspected cancer (GHK-Cu promotes angiogenesis with concern about theoretically feeding tumors, though conflicting data shows documented anti-cancer gene expression effects requiring medical supervision), severe organ dysfunction (kidney or liver failure may slow peptide clearance), hemochromatosis or copper overload conditions, autoimmune disorders, and patients on immunosuppressants or blood thinners
Individual response varies based on age, baseline health, diet, sleep quality, and other factors
Consistency matters more than the specific time of day, though some researchers prefer morning injections to manage initial nausea during waking hours when they can eat lightly and stay hydrated
Initial Boost For individuals new to IV-glutathione infusions, starting with a more frequent schedule is often recommended
Patch testing receives recommendation before use for those with known sensitivities