Macitentan is used to treat pulmonary arterial hypertension. It is an endothelin receptor antagonist (ERA) that lowers the pressure in the pulmonary arteries (blood vessels in the lungs that transfer oxygen into the blood) by blocking the effects of endothelin. It may have the potential to reverse some of the damage done by the condition. This should also improve symptoms such as breathlessness and increase your ability to exercise.
This medication may also be used for other conditions as determined by your doctor.
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