Yes, GHK-Cu cream is prescription-only in the United States
Independent lab tests on these black-market products have revealed horrifying results: Dangerous Contaminants: A comprehensive study found peptides contaminated with the toxic heavy metals arsenic and lead , sometimes at ten times the acceptable limit for injectable drugs
It regulates the production of several hormones, including melatonin
Administration: Subcutaneous (SubQ) injection, typically once per week
FS: Investigation, Methodology, Writing review and editing
Benefits for thymulin therapy include: combatting infections (viral or bacterial), boosting immune cell activity, improving tissue repair and healing, and reducing inflammation