GHK-Cu is for research use only and is not for human consumption
O'Connor E, Devesa A, Garca C, Puertes IR, Pelln A, et al
Mitochondrial free radical generation, oxidative stress, and aging
Some approaches like consistent sleep schedules, optimized sleep environment (temperature, darkness, quiet), regular exercise (timed appropriately relative to sleep), stress reduction practices, and proper light exposure timing may amplify DSIPs sleep-supporting effects for comprehensive sleep wellness enhancement and optimal restorative sleep
The simple answer is that your body can better absorb vitamins and nutrients intravenously compared to orally where the nutrients must battle the digestive system to enter the bloodstream
Realistically, you're looking at 3 months before you'd see early signs of response, and 6 months for a meaningful assessment