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 2004


                              AETERNA ZENTARIS INC.
                   ------------------------------------------
                   (Formerly named AEterna Laboratories 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        Form 40-F    X  
                             ------           ------

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


                                                              
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1.    AEterna Zentaris Receives Regulatory Approval for 
      Impavido(R)in Germany
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AEterna Zentaris Inc. 1405 du Parc-Technologique Blvd.          AEterna Zentaris
Quebec (Quebec) Canada G1P 4P5 T 418 652-8525 F 418 652-0881
www.aeternazentaris.com


                                                           PRESS RELEASE
                                                           For immediate release






AETERNA ZENTARIS RECEIVES REGULATORY APPROVAL FOR IMPAVIDO(R) IN GERMANY

QUEBEC CITY, CANADA, DECEMBER 6, 2004 - AEterna Zentaris Inc. (TSX: AEZ; 
Nasdaq: AEZS) today announced that it has received German Food and Drug 
Agency (BfarM) approval for miltefosine (Impavido(R)), the first-ever 
orally-administered, breakthrough therapy for visceral and cutaneous 
leishmaniasis, a parasitic disease estimated to affect millions of people 
worldwide. The approval enables AEterna Zentaris to market Impavido(R) in 
Germany, as well as to distribute it to military personnel who have become 
infected with leishmaniasis while serving in Afghanistan and Iraq. In 
addition, the German regulatory approval enables AEterna Zentaris to receive 
a Free Sales Certificate (FSC), which can provide the basis for registration 
in countries where leishmaniasis is endemic, such as Colombia and Pakistan.

Impavido(R), or miltefosine, is an alkylphospholipid that has been marketed 
in India since 2003 through cooperation with German Remedies (a member of 
Zydus Cadila). It is the first orally-administered therapy for visceral and 
cutaneous leishmaniasis, a parasitic infection, also known as black fever, 
which affects millions of people and is, according to WHO, endemic in 88 
countries in the world with nearly 350 million people at risk. It is 
estimated that 12 million people currently suffer from this disease with 
1-1.5 million new cases reported annually. Leishmaniasis is a very virulent 
tropical disease, second only to malaria.

The cure rate of Impavido(R) is 95%, even in patients resistant to 
antimony-based standard therapy. Leishmaniasis is transmitted by sand flies. 
The symptoms of visceral leishmaniasis include fever, spleen and liver 
enlargement, blood deficiencies, bleeding of mucous membranes, and severe 
weight loss. If left untreated, visceral leishmaniasis can lead to death 
within 0.5-2 years. The cutaneous form of leishmaniasis, although not deadly, 
is a chronic, severely disfiguring condition.

In Europe, leishmaniasis is a growing problem, especially in the southern 
regions where, until recently, it was not considered endemic. 
Immunocompromised HIV patients, in particular those with AIDS, are at an 
increased risk for this life-threatening disease with approximately 25%-70% 
of leishmaniasis cases in Southern Europe being associated with HIV 
infection. HIV patients are also particularly susceptible to repeated 
recurrences of leishmaniasis due to their immune system's inability to fight 
off the infection. Recently, in November 2004, AEterna Zentaris


announced a publication in the peer-reviewed CLINICAL INFECTIOUS DISEASES 
JOURNAL, demonstrating the therapeutic utility and favourable tolerability of 
oral miltefosine (Impavido(R)) as an initial and maintenance treatment of 
recurrent visceral leishmaniasis in immunocompromised HIV-infected patients.

"In addition to providing an orally-effective new medication with the 
potential to alleviate some human suffering from this horrible disease which 
unfortunately affects mostly the poorest people on earth, this approval 
represents the culmination of twenty years of Research and Development work 
conducted by Dr. Jurgen Engel and his colleagues from the World Health 
Organization, the Max Planck Institute and the University of Goettingen in 
Germany", said Gilles Gagnon, President and Chief Executive Officer at 
AEterna Zentaris. "Dr. Engel, our Executive Vice President, Global R&D and 
Chief Operating Officer, won the Galien Prize in 1995 in Germany for the 
discovery and development of this alkylphospholipid-based product, today 
recognized as an innovative medicine that can cure this potentially lethal 
disease which has now spread even to some parts of Southern Europe."

ABOUT AETERNA ZENTARIS INC.

AEterna Zentaris Inc. is a biopharmaceutical company focused in oncology and 
endocrine therapy. Its extensive portfolio, from drug discovery to marketed 
products, includes cetrorelix and perifosine. Cetrorelix, an LHRH antagonist 
already marketed for IN VITRO fertilization under the brand name 
Cetrotide(R), is also in advanced clinical development for the treatment of 
uterine myoma, endometriosis and benign prostatic hyperplasia (BPH). 
Perifosine, an orally-active AKT inhibitor, is in several Phase II trials for 
multiple cancers.

AEterna Zentaris also owns 60% of Atrium Biotechnologies Inc., which 
develops, manufactures and markets active ingredients, specialty fine 
chemicals, cosmetic and nutritional products for the cosmetics, chemical, 
pharmaceutical and nutritional industries.

News releases and additional information about AEterna Zentaris are available 
on its new Web site www.aeternazentaris.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.


                                      -30-
CONTACTS:

MEDIA RELATIONS                             INVESTOR RELATIONS
Paul Burroughs                              Jacques Raymond
(418) 652-8525 ext. 406                     (418) 652-8525 ext. 360
paul.burroughs@aeternazentaris.com          jacques.raymond@aeternazentaris.com

U.S. INVESTOR RELATIONS                     EUROPE
Lippert/Heilshorn & Associates              Dr. Mathias Pietras
Kim Golodetz                                +49 69 42602 3423
(212) 838-3777                              mathias.pietras@zentaris.de
kgolodetz@lhai.com


                                    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: December 6, 2004          By: /s/ Mario Paradis
----------------------              ---------------------------
                                    Mario Paradis
                                    Senior Finance Director and
                                    Corporate Secretary