Treprostinil/Strong CYP2C8 Inhibitors 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:

Moderate. These medicines may cause some risk when taken together. Contact your healthcare professional (e.g. doctor or pharmacist) for more information.

How the interaction occurs:

Your medicine may slow down how quickly your liver processes treprostinil.

What might happen:

The amount of treprostinil in your blood may increase and cause more side effects than expected.

What you should do about this interaction:

Let your healthcare professionals (e.g. doctor or pharmacist) know that you are taking these medicines together or, if you have not started treprostinil yet, that you have been taking your other medicine for a while. Your doctor may start treprostinil at a lower dosage and increase your dose more slowing. If you have been on treprostinil and are adding another medicine to it, your doctor may change your treprostinil. Let your doctor know if you have severe headache, nausea, diarrhea, or low blood pressure.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.Orenitram (treprostinil) US prescribing information. United Therapeutics Corp. January, 2016.
  • 2.Remodulin (treporstinil) US prescribing information. United Therapeutics Corp. July, 2018.
  • 3.Tyvaso (treprostinil) US prescribing information. United Therapeutics Corp June, 2016.
  • 4.US Food and Drug Administration (FDA). Drug Development and Drug Interactions: Table of Substrates, Inhibitors and Inducers. Available at: drug-interactions-table-substrates-inhibitors-and-inducers. Updated 11/14/2017.
  • 5.This information is based on or an extract from the UW Metabolism and Transport Drug Interaction Database (DIDB) Platform, Copyright University of Washington 1999-2019..

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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.