Not following a validated medical protocol
Long-term high doses in mice led to fatalities however these were extremely high doses, so as long as its taken in appropriate doses, it should not pose harm to humans
To ensure we knew exactly what to look for, I personally went into the lab, partnering with a local university to master HPLC (High-Performance Liquid Chromatography) testing
Our results indicated that neither GHK nor GHK-Cu showed cytotoxic activity at the range of concentrations tested while CuCl 2 and Cu(OAc) 2 showed substantial cytotoxicity to the HaCaT cells at the highest concentration assayed, i.e., at 5800 M, after 30 mins treatment
Metabolism gets support that helps overall wellness: While vitamin B12 shots for weight loss are not magic, healthy B12 levels do support metabolism, and many people feel better during workouts and recover more effectively, which supports fitness goals