Marissa Liza: No
The standard use window
GHK is a naturally occurring peptide, while GHK-Cu is the peptide bound to copper, which activates its biological signaling functions
Use cautiously if taking medication for hormone disorders, particularly 5-alpha-reductase inhibitors, as Astaxanthin may inhibit 5-alpha-reductase, preventing the conversion of testosterone to dihydrotestosterone (DHT) leading to decreased libido, gynecomastia, decreased semen quantity during ejaculation, impotence, increased skin pigmentation, hair growth, weight gain, and low mood
Chen, X., Li, J., Kang, R., Klionsky, D
Researchers exploring peptides for skin and wound care may find this route useful for specific applications