What are the storage requirements for rebif autoinjectors?

Official Storage Guidelines for Rebif Autoinjectors

Rebif (interferon beta-1a) autoinjectors must be stored in a refrigerator at 36°F to 46°F (2°C to 8°C). Do not freeze. Protect from light by keeping in the original carton.[1]

Room Temperature Allowance

Autoinjectors can be kept at room temperature up to 77°F (25°C) for up to 3 months total, or up to 30 days per instance if returned to refrigeration between uses. Discard if left out longer. Track time at room temperature carefully.[1]

Handling Before Injection

Remove from fridge 30 minutes before use to reach room temperature. Do not shake or use heat sources like microwaves. Inspect for discoloration or particles; discard if present.[1]

Travel and Stability Tips

For travel, use a cooler with ice packs but avoid direct ice contact to prevent freezing. Rebif remains stable if not frozen, but always verify temperature exposure. No data on extreme heat stability beyond room temp limits.[1]

Why These Rules Matter

Improper storage can reduce potency, as interferon beta-1a degrades outside specified ranges. Freezing destroys the protein structure; light exposure may cause oxidation. Patients report injection site reactions worsening with unstable product.[2]

[1]: Rebif Prescribing Information (EMD Serono)
[2]: DrugPatentWatch.com - Rebif Stability Data