Adcirca is used to treat pulmonary hypertension (high blood pressure in the blood vessels of the lungs). Adcirca helps lower pulmonary blood pressure by relaxing and widening blood vessels, allowing blood to flow more easily to the lungs. Adcirca may be available under multiple brand names and/or in several different forms. Any specific brand name of Adcirca may not be available in all of the forms or approved for all of the conditions discussed here.