How Long Does Lyophilized Peptide Last?
Lyophilized peptide kept sealed at -20°C is typically stable for 12-24 months, while reconstituted peptide in solution lasts only days to weeks depending on conditions. This huge gap is why proper storage is the single most important factor in peptide research.
The Factors That Degrade Peptides
Peptide degradation is driven by temperature, moisture, light, and oxidation — with temperature being the biggest controllable factor. Every freeze-thaw cycle and every hour at ambient temperature shortens usable life, which is why -20°C sealed storage is the default.
For the complete protocol, see our lyophilized peptide storage guide.
Solution Stability After Reconstitution
Once reconstituted, peptides degrade far faster, so you should reconstitute just before use and refrigerate the remainder. This applies across the catalog, from BPC-157 to Tirzepatide.
How to Maximize Shelf Life
Maximize shelf life by storing lyophilized powder sealed at -20°C, avoiding freeze-thaw cycles, and reconstituting only what you need at the point of use. For batch-specific stability data, contact us on WhatsApp: +852 4419 8097.
Frequently Asked Questions
Q1: How long do lyophilized peptides last?
Typically 12-24 months when kept sealed at -20°C, far longer than reconstituted solution.
Q2: How long does reconstituted peptide last?
Only days to weeks depending on conditions, which is why you should reconstitute just before use and refrigerate.
Q3: What degrades peptides fastest?
Temperature is the biggest factor, followed by moisture, light, oxidation and repeated freeze-thaw cycles.
Important: All products are sold strictly for laboratory and research purposes only — not for human or veterinary use. No medical, therapeutic, or dosing guidance is provided or implied. Researchers are responsible for compliance with their institution and local regulations.