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Active ingredient

Peginterferon Beta-1a

3 finished FDA listings contain Peginterferon Beta-1a as their only active ingredient.

FDA NDC Directory

Ingredient names as written by FDA
PEGINTERFERON BETA-1A
Dosage forms
Injection, Solution
Routes
Intramuscular, Subcutaneous
Manufacturers / labelers
1
Strengths listed
125 ug/.5ml
Brand names in FDA listings
Plegridy, Plegridy Pen

RxNorm (National Library of Medicine)

Ingredient concept RxCUI 1546168

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.

ApplicationSponsorOriginal approvalListings
BLA 125499BIOGEN IDEC INC2014-08-153

Official labeling on DailyMed

Sources: FDA NDC Directory (2026-09-29), RxNorm, Drugs@FDA, DailyMed. Each source’s facts are shown separately as published.