# AVONEX
Keywords: AVONEX, interferon beta-1a, multiple sclerosis, relapsing MS, demyelinating event, disability progression, pregnancy, breast-feeding, intramuscular injection, efficacy, safety, tolerability

> This page provides detailed information about AVONEX, a treatment indicated for relapsing multiple sclerosis and single demyelinating events, including its efficacy, safety, tolerability, and usage during pregnancy and breast-feeding.

## Details
- [Efficacy](#): AVONEX helps slow disability progression and reduce relapse frequency in relapsing multiple sclerosis.
- [Safety & Tolerability](#): AVONEX has an established safety profile with real-world data supporting its use.
- [Pregnancy & Breast-feeding](#): AVONEX may be considered for use during pregnancy and breast-feeding if clinically needed.
- [Convenience](#): AVONEX is administered as a once-a-week intramuscular injection.
- [Indication](#): AVONEX is indicated for patients with relapsing MS or a single demyelinating event with active inflammation.
- [Experience](#): Over 26 years of demonstrated efficacy and safety data support AVONEX's use in clinical practice.