ghk-cu plasma levels age 20 Copper Peptide Regeneration Review (2018) — Research Summary What Does GHK-Cu Do at

Doses up to 60mg/kg per day produced no observable toxicity

Retatrutide, tirzepatide, and other approved or near-approval peptides have their own regulatory pathways

Standard Dosing Parameters Primary Application Dosing 1-2 mg daily 2-3 mg daily or 2 mg 2-3x per week 1-2 mg daily (injectable or topical) 2-5 mg daily under medical supervision Clinical studies used 0.3 mg/mL injections, while systemic wound healing in animal studies used approximately 1.1 mg/kg body weight (translating to ~75 mg total for humans in divided doses)

But for treating neuropathy, we need more to help fix nerve damage and support healing