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Important Information for Your Healthcare Provider

You should talk with your healthcare provider prior to taking this medication if you have:
Also, let your healthcare provider know if you are:
Make sure to tell your healthcare provider about all other medications you are taking, including prescription and nonprescription medicines, vitamins, and herbal supplements.
(Click Precautions and Warnings With Ambrisentan to learn more, including information on who should not take the drug.)

How Does It Work?

Ambrisentan is an endothelin receptor antagonist. Endothelins are proteins that have a variety of actions in the body, including effects on the heart, blood vessels, lungs, and kidneys. One of the things endothelins do is to cause blood vessels to constrict (narrow). People with PAH have higher-than-normal levels of endothelins in the body.
Endothelin can bind to two receptors. Ambrisentan works by blocking one of those receptors (endothelin A, or ETA receptor), preventing endothelin from binding to the receptor. This helps block the actions of the extra endothelin in people with PAH.

Ambrisentan Drug Information

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