La vida útil de los péptidos para bajar de peso no es un valor fijo. It depends primarily on two key factors: the product’s storage conditions y whether it has been opened/reconstituted.

Unopened Lyophilized Powder
Under standard storage conditions(refrigerado a 2-8°C, protegido de la luz, sellado, seco, y libre de cambios drásticos de temperatura):La vida útil indicada en el momento de la fabricación suele ser de 24 a 36 meses. (Sujeto a los estándares de producción de su producto y al informe de inspección de calidad.). Esta es la vida útil estándar de los medicamentos con péptidos liofilizados, ya que el ambiente de baja temperatura maximiza su estabilidad química.
En condiciones de almacenamiento a temperatura ambiente.(por debajo de 25°C, protegido de la luz y sellado):Unopened powder can also be stored at room temperature for a short period, but its shelf life will be significantly shortened, usually to 3–6 months. If the ambient temperature exceeds 25°C, the shelf life will be further reduced, and the efficacy may degrade prematurely.
Opened/Reconstituted Solution (Usage Phase)
Weight loss peptide powder must be reconstituted with normal saline or a dedicated solvent before use. At this stage, the shelf life is extremely short, which is a key consideration for users:

Opened but not reconstituted

If the powder vial has been opened but no solvent has been added, it must be immediately resealed and returned to refrigerated storage at 2–8°C. The shelf life will be shortened to within 1 month, and prompt use is recommended.
Reconstituted into a solution: This is the stage with the shortest shelf life, whether stored refrigerated or at room temperature:
Refrigerated (2–8°C): Shelf life is 7–14 days.
Room temperature (por debajo de 25°C): Shelf life is only 24–48 hours.
If the ambient temperature exceeds 25°C, it is recommended that the reconstituted solution be used within 12 horas. De lo contrario, it will become ineffective due to peptide degradation and may even produce allergenic impurities.