Mexiletine

82 interactions 465 cited references
Also sold as: Mexitil®
About Mexiletine

Mexiletine is used to treat certain types of ventricular arrhythmias (abnormal heart rhythms). Mexiletine is in a class of medications called antiarrhythmics. It works by blocking certain electrical signals in the heart to stabilize the heart rhythm. Read the full Mexiletine drug information page →

Dr. Brian Staiger, PharmD, BCPS
Medically reviewed by Dr. Brian Staiger, PharmD, BCPS · Updated Aug 9, 2026 · Editorial policy · Data sources

Sources: FDA prescribing information (Structured Product Labeling), the published literature cited in each entry, DDInter 2.0 (a major open-access drug-interaction database), and legacy DrugBank interaction data distributed by the NIH's RxNav service (decommissioned in 2024) — analyzed and reviewed by our pharmacist team. How we build this library →

Major

Mexiletine Imatinib Gleevec Increased CYP2D6 substrate exposure with NTI exposure and an increased risk of CYP2D6 substrates with NTI-related adverse reaction... Details Mexiletine Lacosamide Motpoly An increased risk of AV block, bradycardia, and ventricular tachyarrhythmia Details Mexiletine Lidocaine Akten An increased risk of cardiotoxicity Details Mexiletine Lumefantrine Increased CYP2D6 substrate exposure and an increased risk of CYP2D6 substrate-related adverse reactions Details Mexiletine Ombitasvir Increased concentration of the antiarrhythmic agent Details Mexiletine Pacritinib Vonjo® Increased CYP1A2 substrate with NTI exposure and an increased risk of CYP1A2 substrate with NTI-related adverse reactions Details Mexiletine Paritaprevir Increased exposure of antiarrhythmic drug Details Mexiletine Paroxetine Paxil Increased CYP2D6 substrate exposure Details Mexiletine Peginterferon Alfa-2B Increased exposure of the CYP1A2 substrate and increased risk for toxicities Details Mexiletine Pexidartinib Turalio Hepatotoxicity Details Mexiletine Phenytoin Dilantin Reduced mexiletine exposure Details Mexiletine Pimozide Increased pimozide exposure and an increased risk of pimozide-related adverse reactions Details Mexiletine Pirfenidone Esbriet Increased pirfenidone exposure Details Mexiletine Pixantrone Increased CYP1A2 substrate exposure Details Mexiletine Prilocaine An increased risk of cardiotoxicity Details Mexiletine Quinidine Cardioquin® Increased mexiletine bioavailability and an increased risk of cardiotoxicity (QT prolongation, torsades de pointes, cardiac arrest... Details Mexiletine Ranolazine Aspruzyo Increased CYP2D6 substrates exposure Details Mexiletine Rifampin Rifadin Reduced mexiletine exposure Details Mexiletine Simeprevir Olysio® Increased exposure to the antiarrhythmic agent Details Mexiletine Sotalol Betapace Increased risk of QT interval prolongation or prolonged refractoriness Details Mexiletine Taletrectinib Ibtrozi Increased risk of QT interval prolongation and torsade de pointes Details Mexiletine Taurursodiol Decreased exposure of the CYP1A2 substrate Details Mexiletine Theophylline Accurbron® Theophylline toxicity (nausea, vomiting, palpitations, seizures) Details Mexiletine Tizanidine Increased tiZANidine exposure and an increased risk of tiZANidine-related hypotension, bradycardia or increased drowsiness Details Mexiletine Tocilizumab Actemra Reduced mexiletine exposure and reduced efficacy of mexiletine Details Mexiletine Triclabendazole Egaten Increased risk of QT interval prolongation Details Mexiletine Venlafaxine Increased CYP2D6 substrate exposure and an increased risk of associated toxicity Details Mexiletine Vorasidenib Voranigo Increased vorasidenib exposure and an increased risk of vorasidenib-related adverse reactions Details Mexiletine Warfarin Coumadin Increased warfarin exposure and an increased INR Details

Check another drug

Still have questions about this combination?

Every question gets a real answer from a licensed pharmacist — free, and usually within a day.

Ask the pharmacist
Educational information only, not medical advice. Always confirm interactions with your pharmacist or prescriber before making any change to your medications.