ghk-cu peptide topical vs injection Peptide: Injectable Benefits 2026 GHK-Cu Dosage and Protocol: A
Description
The practical advantages of topical: easy to apply, local delivery, lower systemic exposure, and you don't need a needle

Symptoms of neuropathy mostly improve within several months but may take up to one year for sensory symptoms to resolve after the start of B12 therapy [4]

Stahls essential psychopharmacology: Neuroscientific basis and practical applications (5th ed.)

Topical GHK-Cu is generally considered lower-risk than injectable forms, which may explain why it was in Category 1 rather than Category 2
