Active ingredient
Interferon Beta-1a
6 finished FDA listings contain Interferon Beta-1a as their only active ingredient.
FDA NDC Directory
- Ingredient names as written by FDA
- INTERFERON BETA-1A
- Dosage forms
- Injection, Solution
- Routes
- Intramuscular, Subcutaneous
- Manufacturers / labelers
- 2
- Strengths listed
- 22 ug/.5ml · 30 ug/.5ml · 44 ug/.5ml
- Brand names in FDA listings
- Avonex, Avonex Pen, Rebif, Rebif Rebidose
RxNorm (National Library of Medicine)
Ingredient concept RxCUI 75917
Drugs@FDA applications
Linked only where the FDA listing’s application number matches Drugs@FDA exactly. A listing in the NDC Directory does not by itself mean FDA approval.
| Application | Sponsor | Original approval | Listings |
|---|---|---|---|
| BLA 103628 | BIOGEN | 1996-05-17 | 2 |
| BLA 103780 | SERONO INC | 2002-03-07 | 4 |
Official labeling on DailyMed
- AVONEX (INTERFERON BETA-1A) KIT AVONEX PEN (INTERFERON BETA-1A) INJECTION, SOLUTION AVONEX (INTERFERON BETA-1A) INJECTION, SOLUTION [BIOGEN INC.] · version 23 · 2025-11-28
- REBIF (INTERFERON BETA-1A) KIT REBIF REBIDOSE (INTERFERON BETA-1A) KIT REBIF (INTERFERON BETA-1A ) INJECTION, SOLUTION REBIF (INTERFERON BETA-1A) INJECTION, SOLUTION REBIF REBIDOSE (INTERFERON BETA-1A ) INJECTION, SOLUTION [EMD SERONO, INC.] · version 27 · 2025-09-29
Sources: FDA NDC Directory (2026-09-29), RxNorm, Drugs@FDA, DailyMed. Each source’s facts are shown separately as published.