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MEXILETINE HYDROCHLORIDE vs QUINIDEX

Independent side-by-side comparison.

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

Possible drug interaction. MEXILETINE HYDROCHLORIDE 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.

mexiletine hydrochloridequinidex

Rating

70/100
New

Pharmacy pays

~$8.44 /30
~$326.26 /30

Type

RX
RX

Active ingredient

MEXILETINE HYDROCHLORIDE
QUINIDINE SULFATE

Manufacturer

Macleods Pharms Ltd
Wyeth Pharms Inc

Dosage forms

Capsule
Tablet, extended release

Drug class

Antiarrhythmic
Antiarrhythmic

Boxed warning

None
None

Treats

Diabetic Neuropathies, Ventricular Fibrillation, Ventricular Premature Complexes
Atrial Fibrillation, Atrial Flutter

Frequently asked questions

Which is cheaper, Mexiletine Hydrochloride or Quinidex?

Mexiletine Hydrochloride 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 Mexiletine Hydrochloride and Quinidex?

Mexiletine Hydrochloride contains Mexiletine Hydrochloride, 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.