The idea to question
Every peptide follows the same storage rule.
The short answer
The product decides the storage rule. Some peptide medicines need cold storage; others belong at room temperature. MedlinePlus on semaglutide

Read the rule for the actual product
As of September 2026, the labels for tesamorelin (Egrifta SV, Egrifta WR) say to store it at room temperature. The tesamorelin product label
For comparison, MedlinePlus describes cold storage for semaglutide (Ozempic, Wegovy) injection pens. MedlinePlus on semaglutide
Ask the pharmacist how your particular medicine must be stored and what to do if delivery is delayed.
A cold-storage problem needs an answer
Hormones carry chemical messages within the body. One is GLP-1, which affects appetite and blood sugar. Weight and diabetes care includes medicines that copy GLP-1.
FDA means Food and Drug Administration. Its September 2026 warning concerns GLP-1 injections needing cold storage. Do not use one if the parcel arrives warm or its cooling was insufficient. Keep this warning separate from the instructions for medicines stored at room temperature. FDA’s weight-care cautions
- What storage instructions apply to this exact product?
- How can I ask the pharmacist about an unexpected delivery?
- What is the process for a damaged parcel or missing instructions?