IBUTILIDE FUMARATE vs QUINIDEX

Independent side-by-side comparison.

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

Possible drug interaction. IBUTILIDE FUMARATE and QUINIDEX 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	IBUTILIDE FUMARATE	QUINIDEX
Rating	70/100	New
Pharmacy pays	—	~$326.26 /30
Type	RX	RX
Active ingredient	IBUTILIDE FUMARATE	QUINIDINE SULFATE
Manufacturer	Luitpold	Wyeth Pharms Inc
Dosage forms	Injectable	Tablet, extended release
Drug class	Antiarrhythmic	Antiarrhythmic
Boxed warning	None	None
Treats	Atrial Fibrillation, Atrial Flutter	Atrial Fibrillation, Atrial Flutter

ibutilide fumarate quinidex

Rating

70/100

New

Pharmacy pays

—

~$326.26 /30

Type

Active ingredient

IBUTILIDE FUMARATE

QUINIDINE SULFATE

Manufacturer

Luitpold

Wyeth Pharms Inc

Dosage forms

Injectable

Tablet, extended release

Drug class

Antiarrhythmic

Boxed warning

None

Treats

Atrial Fibrillation, Atrial Flutter

Frequently asked questions

What is the difference between Ibutilide Fumarate and Quinidex?

Ibutilide Fumarate contains Ibutilide Fumarate, while Quinidex contains Quinidine Sulfate — 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.