Macitentan Devatis is a medicine used to treat high blood pressure in the arteries of your lungs (Pulmonary Arterial Hypertension, PAH) by widening them and making it easier for your heart to pump blood.
Take one 10 mg tablet once a day.
Swallow the tablet whole with a glass of water. Do not chew or break it. You can take it with or without food. Try to take it at the same time each day.
Do not take more than one 10 mg tablet per day.