While recommended temperature-related storage data were easily retrievable ... 14 days Manufacturer Interferon beta-1a i.m. injection Avonex (Biogen Idec) 30 days Prescribing information ...
Avonex (interferon beta-1a) may not be safe to use while pregnant but may be safe to use during breastfeeding. Certain factors, including the risk of fetal harm, may determine whether you should ...