United Therapeutics Corporation is a biotechnology company. The Company is focused on the development and commercialization of products for the treatment of chronic and life-threatening conditions. The Company markets and sells four commercial therapies in the United States to treat pulmonary arterial hypertension (PAH): Remodulin (treprostinil) Injection; Tyvaso (treprostinil) Inhalation Solution (Tyvaso); Orenitram (treprostinil) Extended-Release Tablets (Orenitram); and...