MEXITIL vs QUINIDINE SULFATE

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 23, 2026·How we rate

Possible drug interaction. MEXITIL and QUINIDINE SULFATE 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	MEXITIL	QUINIDINE SULFATE
Rating	72/100	New
Pharmacy pays	~$8.44 /30	~$326.26 /30
Type	RX	RX
Active ingredient	MEXILETINE HYDROCHLORIDE	QUINIDINE SULFATE
Manufacturer	Boehringer Ingelheim	Halsey
Dosage forms	Capsule	Tablet
Drug class	Antiarrhythmic	Antiarrhythmic
Boxed warning	None	None
Treats	Diabetic Neuropathies, Ventricular Fibrillation, Ventricular Premature Complexes	Atrial Fibrillation, Atrial Flutter

mexitil quinidine sulfate

Rating

72/100

New

Pharmacy pays

~$8.44 /30

~$326.26 /30

Type

Active ingredient

MEXILETINE HYDROCHLORIDE

QUINIDINE SULFATE

Manufacturer

Boehringer Ingelheim

Halsey

Dosage forms

Capsule

Tablet

Drug class

Antiarrhythmic

Boxed warning

None

Treats

Diabetic Neuropathies, Ventricular Fibrillation, Ventricular Premature Complexes

Atrial Fibrillation, Atrial Flutter

Frequently asked questions

Which is cheaper, Mexitil or Quinidine Sulfate?

Mexitil costs pharmacies less to acquire — about $8.44 vs $326.26 for a 30-count supply, per the CMS NADAC survey. That gap is in the pharmacy's cost of goods, not necessarily in what you pay: your price is set afterwards by your insurer and the pharmacy.

What is the difference between Mexitil and Quinidine Sulfate?

Mexitil contains Mexiletine Hydrochloride, while Quinidine Sulfate 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.