FORM 6-K
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                            REPORT OF FOREIGN ISSUER

                      Pursuant to Rule 13a-16 or 15d-16 of
                       the Securities Exchange Act of 1934

                         For the month of December 2008

                              AETERNA ZENTARIS INC.

                        1405, boul. du Parc-Technologique
                                 Quebec, Quebec
                                 Canada, G1P 4P5
                    (Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports
under cover of Form 20-F or Form 40-F.

                           Form 20-F /X/ Form 40-F / /

Indicate by check mark whether the registrant by furnishing the information
contained in this Form is also thereby furnishing the information to the
Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934

                                 Yes / / No /X/

If "Yes" is marked, indicate below the file number assigned to the registrant in
connection with Rule 12g3-2(b): 82----



                                 DOCUMENTS INDEX

DOCUMENTS DESCRIPTION

1.     Press Release dated December 3, 2008: AEterna Zentaris Closes Sale of
       Cetrotide(R) Royalty Stream for $52.5 Million to Cowen Healthcare Royalty
       Partners



                                                         [AETERNA ZENTARIS LOGO]

AETERNA ZENTARIS INC. 1405 du Parc-Technologique Blvd.
Quebec (Quebec) Canada  G1P 4P5  T 418 652-8525  F 418 652-0881
www.aezsinc.com


                                                           PRESS RELEASE
                                                           For immediate release

AETERNA ZENTARIS CLOSES SALE OF CETROTIDE(R) ROYALTY STREAM FOR $52.5 MILLION TO
COWEN HEALTHCARE ROYALTY PARTNERS

ALL AMOUNTS ARE IN U.S. DOLLARS

QUEBEC CITY, CANADA, DECEMBER 3, 2008 - AEterna Zentaris Inc. (NASDAQ: AEZS;
TSX: AEZ), a global biopharmaceutical company focused on endocrine therapy and
oncology, announces that it has completed the transaction under the previously
announced purchase and sale agreement with Cowen Healthcare Royalty Partners,
L.P. ("CHRP") relating to AEterna Zentaris' rights to royalties on future sales
of Cetrotide(R) covered by its license agreement with Merck Serono. AEterna
Zentaris received $52.5 million from CHRP at closing, less certain transaction
costs. Under the terms of the agreement with CHRP, AEterna Zentaris would
receive an additional payment of $2.5 million from CHRP contingent on 2010 net
sales of Cetrotide(R) reaching a specified level.

ABOUT CETROTIDE(R) (CETRORELIX)

Cetrotide(R) (cetrorelix) was the first luteinizing hormone-releasing hormone
(LHRH) antagonist treatment approved for IN VITRO fertilization. It is
administered to women to prevent premature ovulation in order to increase
fertility success rate. Developed in cooperation with Medicine Nobel-Prize
winner, Professor Andrew Schally of Veterans Affairs, Miami, Florida, it was
launched in Europe in 1999 and in the United States in 2001. Cetrotide(R) is
currently marketed worldwide by Merck Serono, except for Japan where it is
marketed by Nippon Kayaku and Shionogi.

Cetrorelix is also currently in a Phase 3 program in benign prostatic
hyperplasia involving 1,500 patients in North America and Europe. First results
are expected in Q3 2009 with an NDA filing to follow in 2010 and potential
launch in 2011.

ABOUT COWEN HEALTHCARE ROYALTY PARTNERS

Cowen Healthcare Royalty Partners ("CHRP") is a global healthcare private equity
firm with over $500 million in capital under management. The firm invests
principally in commercial-stage biopharmaceutical and medical device companies
and products, through the purchase of royalty or Synthetic Royalty(SM)
interests, debt and equity. CHRP's investment team has over 90 years of
healthcare related experience including principal investing, structured finance,
healthcare



                                                         [AETERNA ZENTARIS LOGO]

industry senior management, Wall Street research and consulting, scientific and
clinical experience. For more information, please visit www.cowenroyalty.com.

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.

FORWARD-LOOKING STATEMENTS

This press release contains forward-looking statements made pursuant to the safe
harbor provisions of the U.S. Securities Litigation Reform Act of 1995.
Forward-looking statements involve known and unknown risks and uncertainties,
which could cause the Company's actual results to differ materially from those
in the forward-looking statements. Such risks and uncertainties include, among
others, the availability of funds and resources to pursue R&D projects, the
successful and timely completion of clinical studies, the ability of the Company
to take advantage of business opportunities in the pharmaceutical industry,
uncertainties related to the regulatory process and general changes in economic
conditions. Investors should consult the Company's quarterly and annual filings
with the Canadian and U.S. securities commissions for additional information on
risks and uncertainties relating to the forward-looking statements. Investors
are cautioned not to rely on these forward-looking statements. The Company does
not undertake to update these forward-looking statements. We disclaim any
obligation to update any such factors or to publicly announce the result of any
revisions to any of the forward-looking statements contained herein to reflect
future results, events or developments except if we are requested by a
governmental authority or applicable law.

CONTACTS

INVESTOR RELATIONS
Ginette Vallieres
Investor Relations Coordinator
(418) 652-8525 ext. 265
gvallieres@aezsinc.com


MEDIA RELATIONS
Paul Burroughs
Director of Communications
(418) 652-8525 ext. 406
pburroughs@aezsinc.com

                                      -30-


                                    SIGNATURE

       Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned, thereunto duly authorized.


                           AETERNA ZENTARIS INC.


Date: Dec. 3, 2008         By: /s/Dennis Turpin
------------------             -------------------------------------------
                               Dennis Turpin
                               Senior Vice President and Chief Financial Officer