How do I store unreconstituted (lyophilized/powder) peptides?
Short-term (a few months): Room temperature or fridge is perfectly fine.
Long-term (6+ months): Freezer for maximum longevity (potentially a decade or more).
Lyophilized tirzepatide has been confirmed stable for over a year at room temperature through Janoshik testing. Don't panic about peptides shipped unrefrigerated—the factories and warehouses in China aren't refrigerated either.