What is bosentan?
Bosentan prevents thickening of the blood vessels, especially those in the lungs and heart. Bosentan also lowers blood pressure in your lungs, helping your heart pump blood more efficiently. Bosentan is used to treat pulmonary arterial hypertension (PAH). It improves your ability to exercise and prevents your condition from getting worse. Bosentan may also be used for purposes other than those listed in this medication guide.
