ghk-cu typical daily dose subcutaneous injection Peptides Before and After: Dosage, Benefits & How It Works for Skin and Hair GHK-Cu Peptide Dosage – Neurogan

Even a recent 2026 review concludes the same thing that GHK-Cu appears safe but the evidence is largely preclinical and comprehensive human RCTs are lacking (Wojcieszuk et al., 2026)

Avoid repeated freezing and thawing, which may accelerate degradation

GHK-Cu (glycyl-L-histidyl-L-lysine-copper) is a naturally occurring tripeptide your body produces, but levels drop sharply with age, from roughly 200 ng/mL at age 20 to about 80 ng/mL by age 60

Learn about the available VALTOCO dosing options for pediatric and adult patients

Women of reproductive potential should be counseled about these risks and should use effective contraception during treatment