CHARLOTTE, N.C., March 17, 2010 (GLOBE NEWSWIRE) -- Chelsea Therapeutics International, Ltd. (Nasdaq:CHTP) reported findings from Study 305, a study evaluating the effect of Northera™ (Droxidopa), an investigational agent being studied for the treatment of neurogenic orthostatic hypotension (NOH), on patients’ 24-hour blood pressure (BP) profile.