Storage & Stability — The Complete Peptide Guide
The three enemies of peptide stability are heat, light, and agitation. Lyophilized powder lasts 24+ months in the freezer, 12-18 months refrigerated. Reconstituted peptides must stay refrigerated at 2-8°C — never frozen. Freezing causes ice crystals to physically shear the molecular bonds (denaturation), permanently destroying bioactivity. Reconstituted shelf life: GLP-1s 28-56 days, GHRPs 30 days, healing peptides 30-45 days, GHK-Cu 14-30 days.