SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                                    ________

                                    FORM 6-K

                        REPORT OF FOREIGN PRIVATE ISSUER
                      PURSUANT TO RULE 13A-16 OR 15D-16 OF
                       THE SECURITIES EXCHANGE ACT OF 1934

                         For the month of December, 2003

                                  Serono S.A.
                   ------------------------------------------
                              (Registrant's Name)

                            15 bis, Chemin des Mines
                                Case Postale 54
                                CH-1211 Geneva 20
                                  Switzerland
                      -----------------------------------
                    (Address of Principal Executive Offices)

                                    1-15096
                   ------------------------------------------
                              (Commission File No.)

     (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  if the registrant is submitting the Form 6-K in
paper  as  permitted  by  Regulation  S-T  Rule  101  (b)(1).)  ______

     (Indicate  by  check  mark  if the registrant is submitting the Form 6-K in
paper  as  permitted  by  Regulation  S-T  Rule  101  (b)(7).)   ______

     (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-______)



                                                                    SERONO
                                                               [GRAPHIC OMITTED]


Media  Release

FOR IMMEDIATE RELEASE
---------------------


          FDA APPROVES SERONO'S ZORBTIVE(TM) FOR USE IN PATIENTS WITH
                              SHORT BOWEL SYNDROME

  USE OF RECOMBINANT HUMAN GROWTH HORMONE IN PATIENTS WITH SHORT BOWEL SYNDROME
              PROVIDES BENEFIT TO PEOPLE WITH THIS RARE CONDITION

ROCKLAND,  MA,  DECEMBER 2, 2003 - Serono, Inc., the US affiliate of Serono S.A.
(virt-x:  SEO  and  NYSE:  SRA),  announced  today  that  the  U.S Food and Drug
Administration  (FDA) has approved Zorbtive(TM)(1) [somatropin (rDNA origin) for
injection]  for  use  in  the  treatment  of  short  bowel  syndrome  (SBS).

"We  are delighted that the FDA has approved Zorbtive(TM) for treatment of short
bowel  syndrome,"  said  James  Sapirstein,  Executive Vice President, Metabolic
Endocrinology,  Serono,  Inc.  "There  has  been a substantial clinical need for
additional  effective  treatment  options for patients with this rare condition.
We  are  pleased  that  continued discussions with the FDA following an Advisory
Committee  meeting in June have resulted in our being able to bring this product
to  patients."

SBS  is  a rare, serious and potentially life-threatening condition that follows
extensive surgical removal of portions of the small intestine as a treatment for
acute  or chronic disorders of the intestine.  Removal of a large portion of the
bowel  results  in  impaired  absorption  of  nutrients.  Currently the standard
treatment  for  SBS involves careful management of dietary intake and hydration,
or  where  appropriate,  a  process referred to as parenteral nutrition in which
patients  are  fed  through  an  intravenous  tube.  On rare occasions, surgical
transplant  of the intestine may also be performed for this condition. There are
an  estimated  10,000-20,000  patients  in  the  United States who are receiving
intravenous  parenteral  nutrition  for  SBS.

In  a  randomized  double-blind,  controlled,  parallel group Phase III clinical
study,  Serono's  recombinant human growth hormone administered with specialized
nutritional  support  was  shown  to  significantly reduce patient dependence on
total  parenteral  nutrition  as  measured  by  total volume, total calories and
frequency  of

_______________________________
(1)  Zorbtive(TM)  [somatropin  (rDNA origin) for injection] is a new trade name
for  Serono's  recombinant  human  growth  hormone.



infusion.  Serono's  recombinant human growth hormone was granted an orphan drug
designation  for  use  in the treatment of patients with short bowel syndrome by
the  FDA  Office  of  Orphan  Products  Development.

ADDITIONAL  PRODUCT  INFORMATION
The  most  common adverse events associated with growth hormone therapy are mild
to  moderate  muscle  and  joint  pain  and  swelling/edema,  which  occur  in a
dose-related  manner  and  often  subside  with  continued  treatment  or  dose
reduction.  Cases  of  new  onset impaired glucose intolerance, new onset type 2
diabetes  mellitus  and  exacerbation of preexisting diabetes mellitus have been
reported.  Some  patients  develop  diabetic  ketacidosis and diabetic coma.  In
some patients, therapy with growth hormone necessitates initiation or adjustment
of  anti-diabetic  treatment.  Patients with a history of hyperglycemia or other
risk  factors  for  glucose  intolerance should be monitored closely.  Transient
increases  in  glucose  levels occur early in treatment and should be monitored.

Use  of  growth hormone is contraindicated in treatment of patients in intensive
care  units  due  to  complications  following  open-heart  surgery or abdominal
surgery,  multiple accidental trauma or acute respiratory failure; patients with
active  neoplasia;  and  patients with known hypersensitivity to growth hormone.

ABOUT  SERONO

Serono,  Inc.,  located in Rockland, MA, is the US affiliate of Serono, a global
biotechnology  leader. The Company has six recombinant products on the worldwide
market, Gonal-F(R) (follitropin alfa for injection), Luveris(R) (lutropin alfa),
Ovidrel(R)/Ovitrelle(R)  (choriogonadotropin  alfa  injection),  Rebif(R)
(interferon  beta-1a),  Serostim(R) [somatropin (rDNA origin) for injection] and
Saizen(R)  [somatropin (rDNA origin) for injection]. (Luveris(R) is not approved
in  the  USA.)(2)  In addition to being the world leader in reproductive health,
Serono  has  strong  market  positions  in neurology, metabolism and growth. The
Company's  research  programs  are  focused  on  growing these businesses and on
establishing  new  therapeutic  areas.  Currently, there are over 30 projects in
development.

Serono  was  awarded the International James D. Watson 2003 Helix Award from the
Biotechnology  Industry  Organization  (BIO)  in  recognition  of  the Company's
outstanding  leadership  and  highest  standards  of  scientific  and  product
achievement.

In  2002, Serono achieved worldwide revenues of $1.538 billion, and a net income
of  $321  million, making it the third largest biotech company in the world. The
Company  operates  in  44  countries,  and  its  products  are  sold  in over 94
countries.  Bearer shares of Serono S.A., the holding company, are traded on the
virt-x (SEO) and its American Depositary Shares are traded on the New York Stock
Exchange  (SRA).

                                       ###

Some  of  the  statements  in  this  press  release  are  forward  looking. Such
statements  are inherently subject to known and unknown risks, uncertainties and
other  factors  that  may  cause  actual results, performance or achievements of
Serono  S.A.  and  affiliates  to be materially different from

_______________________________
(2)  Package  inserts  for  Serono's  US  marketed  products  are  available  at
www.seronousa.com  or  by  calling  1-888-275-7376.
-----------------



those expected or anticipated in the forward-looking statements. Forward-looking
statements are based on Serono's current expectations and assumptions, which may
be  affected  by  a  number  of factors, including those discussed in this press
release  and  more  fully described in Serono's Annual Report on Form 20-F filed
with  the  U.S.  Securities  and  Exchange  Commission  on April 17, 2003. These
factors  include  any  failure  or  delay  in  Serono's  ability  to develop new
products,  any failure to receive anticipated regulatory approvals, any problems
in commercializing current products as a result of competition or other factors,
our  ability  to  obtain reimbursement coverage for our products, and government
regulations  limiting  our  ability  to  sell  our  products.  Serono  has  no
responsibility  to update the forward-looking statements contained in this press
release  to  reflect  events  or  circumstances occurring after the date of this
press  release.

                                       ###


FOR MORE INFORMATION, PLEASE CONTACT:

SERONO IN GENEVA, SWITZERLAND:
  MEDIA RELATIONS:                INVESTOR RELATIONS:
  Tel:   +41-22-739 36 00         Tel:   +41-22-739 36 01
  Fax:   +41-22-739 30 85         Fax:   +41-22-739 30 22
  http://www.serono.com           Reuters: SEOZ.VX / SRA.N
  ---------------------
                                  Bloomberg: SEO VX / SRA US
  SERONO, INC., ROCKLAND, MA
  MEDIA RELATIONS:                INVESTOR RELATIONS:
  Tel.   +1 781 681 2340          Tel.   +1 781 681 2552
  Fax:   +1 781 681 2935          Fax:   +1 781 681 2912
  http://www.seronousa.com
  ------------------------



                                   SIGNATURES

     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.



                                   SERONO S.A.
                                   a Swiss corporation
                                   (Registrant)



December  2,  2003                 By:    /s/ Allan Shaw
                                          -------------------------------
                                   Name:  Allan Shaw
                                   Title: Chief Financial Officer