BETASERON vs PLEGRIDY

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 21, 2026·How we rate

Possible drug interaction. BETASERON and PLEGRIDY are different prescription medicines. Combining or switching between them can cause interactions — talk to a pharmacist or prescriber before making changes. This page is not medical advice.

Attribute	BETASERON	PLEGRIDY
Rating	68/100	New
Pharmacy pays	—	—
Type	RX	RX
Active ingredient	INTERFERON BETA-1B	PEGINTERFERON BETA-1A
Manufacturer	Bayer Pharms	Biogen Idec
Dosage forms	Kit	Injectable, Kit
Drug class	—	—
Boxed warning	None	None
Treats	Multiple Sclerosis, Brain Neoplasms, Renal Cell Carcinoma	Multiple Sclerosis

betaseron plegridy

Rating

68/100

New

Pharmacy pays

—

Type

Active ingredient

INTERFERON BETA-1B

PEGINTERFERON BETA-1A

Manufacturer

Bayer Pharms

Biogen Idec

Dosage forms

Kit

Injectable, Kit

Drug class

—

Boxed warning

None

Treats

Multiple Sclerosis, Brain Neoplasms, Renal Cell Carcinoma

Multiple Sclerosis

Frequently asked questions

What is the difference between Betaseron and Plegridy?

Betaseron contains Interferon Beta-1b, while Plegridy contains Peginterferon Beta-1a — they have different active ingredients.

Ratings are based on FDA regulatory (recall-safety) data. This comparison is for general reference only — not medical advice. Always consult a licensed professional before choosing or switching a medication.