Author contributions ZF, ZT, WT, and XZ contributed to conception and design of the study
Research Overview GHK-Cu is a naturally occurring copper complex tripeptide first isolated from human plasma, widely studied for its powerful cellular repair, collagen synthesis, and anti-aging research properties
Novo Nordisks semaglutide franchise alone generated approximately $33 billion in 2025, while Eli Lillys tirzepatide continues to capture significant market share
Scientific Publishing Company mbH Stuttgart, 2006
Branded options, including Ozempic, Wegovy, Mounjaro, and Zepbound, may also be available
In reproduction, melatonin and related peptides scavenge reactive oxygen species in follicular fluid and seminal plasma, protect mitochondrial DNA, and reduce gamete membrane lipid peroxidation