Selected MATE Substrates that Prolong QT/Risdiplam Interactions

This information is generalized and not intended as specific medical advice. Consult your healthcare professional before taking or discontinuing any drug or commencing any course of treatment.

Medical warning:

Serious. These medicines may interact and cause very harmful effects. Contact your healthcare professional (e.g. doctor or pharmacist) for more information.

How the interaction occurs:

Risdiplam may inhibit the ability of your kidneys to remove certain medicines from your body.

What might happen:

The amount of these medicines in your body may increase and cause more side effects than expected and increase your risk of an irregular heartbeat, which may be life-threatening.

What you should do about this interaction:

Make sure your healthcare professionals (e.g. doctor or pharmacist) know that you are taking these medicines together. Let your doctor know right away if you notice an irregular heartbeat or have any dizziness or fainting episodes. Your doctor may want to change the dose of your medicine or change you to a different medicine. Let your doctor or pharmacist know if you develop any new side effects of your medication.Your healthcare professionals may already be aware of this interaction and may be monitoring you for it. Do not start, stop, or change the dosage of any medicine before checking with them first.

  • 1.Evrysdi (risdiplam) US prescribing information. Genentech, Inc. September 30, 2020.
  • 2.Drew BJ, Ackerman MJ, Funk M, Gibler WB, Kligfield P, Menon V, Philippides GJ, Roden DM, Zareba W. Prevention of torsade de pointes in hospital settings: a scientific statement from the American Heart Association and the American College of Cardiology Foundation. J Am Coll Cardiol 2010 Mar 2;55(9):934-47.
  • 3.USDepartment of Health and Human Services Food and Drug Administration. ICH E14 Clinical Evaluation of QT/QTc Interval Prolongation and Proarrhythmic Potential for Non-Antiarrhythmic Drugs. Available at: https://www.fda.gov/media/71372/download October, 2005.
  • 4.Tikosyn (dofetilide) US prescribing information. Pfizer Inc. December, 2013.

Selected from data included with permission and copyrighted by First Databank, Inc. This copyrighted material has been downloaded from a licensed data provider and is not for distribution, except as may be authorized by the applicable terms of use.

CONDITIONS OF USE: The information in this database is intended to supplement, not substitute for, the expertise and judgment of healthcare professionals. The information is not intended to cover all possible uses, directions, precautions, drug interactions or adverse effects, nor should it be construed to indicate that use of a particular drug is safe, appropriate or effective for you or anyone else. A healthcare professional should be consulted before taking any drug, changing any diet or commencing or discontinuing any course of treatment.