Semaglutide ships lyophilized for stability. Storage is one of the largest factors in keeping the material usable over time.
Powder vs solution
Sealed lyophilized vials are typically refrigerated at 2–8 °C and frozen at −20 °C or below long-term, kept from heat, moisture, and light. Reconstituted solution is less stable and generally refrigerated and light-protected — see storing research peptides and reconstitution.
Product page: Semaglutide research vials.
Research Use Only. Supplied strictly for laboratory research and development — not for human or veterinary use, consumption, or any therapeutic or diagnostic purpose. This article is research education, not usage guidance.