GHK-Cu occurs naturally in the body and has broader documented effects on skin, wounds, and tissue regeneration
AOD-9604 is an artificially created peptide, a small protein synthesized in the lab
The primary concerns with nasal peptides involve nasal irritation if formulations arent pH-optimized, potential mucosal damage from preservatives, and variable absorption due to nasal congestion
For example, while NAION nearly always presents only in one eye at a time, some patients presented with it in both eyes at the same time
As a lyophilized powder, sealed and kept cold, dark, and dry, generally at or below -20C for long-term storage