United Therapeutics Corporation engages in the development and commercialization of products to address the unmet medical needs of patients with chronic and life-threatening diseases in the United States and internationally. It offers Tyvaso DPI, an inhaled dry powder via pre-filled and single-use cartridges; Nebulized Tyvaso, an inhaled solution via ultrasonic nebulizer; Remodulin (treprostinil) injection to treat patients with pulmonary arterial hypertension to diminish symptoms associated with exercise; Orenitram, a tablet dosage form of treprostinil, to delay disease progression and improve exercise capacity in PAH patients; and Adcirca, an oral PDE-5 inhibitor to enhance the exercise ability in PAH patients. It also markets and sells Unituxin (dinutuximab) injection, a monoclonal anti…