AEterna Zentaris to Announce Third Quarter 2009 Financial and Operating Results on November 11, 2009

QUEBEC CITY, Nov. 4 /PRNewswire-FirstCall/ – AEterna Zentaris Inc. (NASDAQ: AEZS, TSX: AEZ) (the “Company”), a global biopharmaceutical company focused on endocrine therapy and oncology, will announce its third quarter 2009 financial and operating results before market open on Wednesday, November 11, 2009. The Company will host a conference call and webcast to discuss these results later that same day at 10:00 a.m., Eastern Time.

Participants may access the live webcast via the Company’s website at www.aezsinc.com in the “Investors” section, or by telephone using the following numbers: 877-974-0453, 416-644-3431, or 514-227-8860. A replay of the webcast will also be available on the Company’s website for a period of 30 days.

About AEterna Zentaris Inc.

AEterna Zentaris Inc. is a global biopharmaceutical company focused on endocrine therapy and oncology with proven expertise in drug discovery, development and commercialization. News releases and additional information are available at www.aezsinc.com.

SOURCE AETERNA ZENTARIS INC.