MARLBOROUGH, Mass.--(BUSINESS WIRE)--April 5, 2006--Sepracor Inc. (Nasdaq: SEPR - News) will announce its first quarter 2006 financial results on April 25, 2006. In conjunction with the press release, Sepracor will host a conference call and live webcast beginning at 8:30 a.m. ET on April 25, 2006 to discuss its first quarter 2006 financial results.