Official Storage Rules for Omnitrope
Omnitrope, a somatropin injection for growth hormone deficiency, requires refrigeration at 36°F to 46°F (2°C to 8°C) for long-term storage. Do not freeze.[1][2]
How Long Can It Stay at Room Temperature?
Unopened pens or vials can be kept at room temperature up to 77°F (25°C) for up to 21 days (for Omnitrope Pen 5 or 10 mg). Check the specific product label, as durations vary slightly by formulation. After this, discard if not refrigerated.[1][2]
What Happens If It's Left Out Longer?
If exposed to room temperature beyond the allowed time or higher heat, potency may decrease. Do not use if it's been frozen, exposed to light excessively, or stored improperly. Patients report variability in manufacturer advice, so consult the package insert or pharmacist immediately.[2][3]
Travel and Daily Use Tips
For travel, use a cooler pack to maintain refrigeration. In-use pens can stay at room temperature during daily dosing but must return to the fridge between uses. Avoid direct sunlight or car interiors.[1]
Compared to Other Growth Hormones
Unlike some competitors (e.g., Norditropin, stable at room temp for 21-28 days), Omnitrope has stricter limits on certain cartridges. Genotropin allows shorter room-temp exposure (up to 3 weeks for some). Always verify per brand.[3]
Sources
[1] Omnitrope Prescribing Information (Sandoz)
[2] FDA Label for Omnitrope
[3] Drugs.com - Omnitrope Storage