Skip to content

bosentan

Interactions

Bosentan; Macitentan/Rifampin

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:

Rifampin may change how your liver processes bosentan or macitentan.

What might happen:

If you are on bosentan, at first, the amount of bosentan in your blood may increase and cause more side effects than normal; however, after a few days, the amount of bosentan in your blood may decrease and it may not work as well.If you are on macitentan, the amount of macitentan in your blood may decrease and it may not work as well.

What you should do about this interaction:

Let your healthcare professionals (e.g. doctor or pharmacist) know that you are taking these medicines together.If you are taking bosentan, your doctor may want to run tests to check your liver more often while you are taking rifampin. If you have any headaches, nausea, vomiting, fever, unusual tiredness, abdominal pain, or yellowing of the skin or whites of your eyes, contact your doctor. If you notice any change in your condition such as shortness-of-breath, increased weakness, or feeling like you might pass out, contact your doctor right away.If you are taking macitentan and notice any change in your condition such as shortness-of-breath, increased weakness, or feeling like you might pass out, contact your doctor right away.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.

References:

1.van Giersbergen PL, Treiber A, Schneiter R, Dietrich H, Dingemanse J. Inhibitory and inductive effects of rifampin on the pharmacokinetics of bosentan in healthy subjects. Clin Pharmacol Ther 2007 Mar;81(3):414-9.

2.Opsumit (macitentan) prescribing information. Actelion Pharmaceuticals US, Inc. October, 2013.

3.Tracleer (bosentan) US prescribing information. Actelion Pharmaceuticals US, Inc. October, 2012.

4.Bruderer S, Aanismaa P, Homery MC, Hausler S, Landskroner K, Sidharta PN, Treiber A, Dingemanse J. Effect of cyclosporine and rifampin on the pharmacokinetics of macitentan, a tissue-targeting dual endothelin receptor antagonist. AAPS J 2012 Mar;14(1):68-78.

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, expect 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.

More about Drugs and Medications

Newsletters

Subscribe to free WebMD newsletters.

  • WebMD Daily

    WebMD Daily

    Subscribe to the WebMD Daily, and you'll get today's top health news and trending topics, and the latest and best information from WebMD.

  • Men's Health

    Men's Health

    Subscribe to the Men's Health newsletter for the latest on disease prevention, fitness, sex, nutrition, and more from WebMD.

  • Women's Health

    Women's Health

    Subscribe to the Women's Health newsletter for the latest on disease prevention, fitness, sex, diet, anti-aging, and more from WebMD.

By clicking Submit, I agree to the WebMD Terms & Conditions & Privacy Policy

URAC: Accredited Health Web Site TRUSTe online privacy certification HONcode Seal AdChoices