PRESS RELEASE

SILVER SPRING, Md., Oct. 22 /PRNewswire-FirstCall/ -- United Therapeutics Corporation (Nasdaq: UTHR) announced today that it will release its 2009 third quarter financial results before market open on Thursday, October 29, 2009.

United Therapeutics will host a half-hour teleconference on Thursday, October 29, 2009, at 9:00 a.m. Eastern Time. The teleconference is accessible by dialing 1-888-632-5007, with international callers dialing 1-913-312-9324. A rebroadcast of the teleconference will be available for one week and can be accessed by dialing 1-888-203-1112, with international callers dialing 1-719-457-0820, and using conference code: 7459513.

This teleconference is also being webcast and can be accessed via United Therapeutics' website at http://ir.unither.com/events.cfm. [uthr-g]

United Therapeutics Corporation is a biotechnology company focused on the development and commercialization of unique products to address the unmet medical needs of patients with chronic and life-threatening cardiovascular and infectious diseases and cancer.

SOURCE United Therapeutics Corporation