[NOVARTIS LOGO]
                                                       NOVARTIS INTERNATIONAL AG
                                                       Novartis Global
                                                       Communications
                                                       CH-4002 Basel
                                                       Switzerland
                                                       http://www.novartis.com
                                                       -----------------------


                          John Gilardi
                          Novartis Global Media      Kurt Leidner
                          Relations                  Sandoz Communications
                          +41 61 324 3018 (direct)   +43 1 260 68 9611 (direct)
                          +41 79 596 1408 (mobile)   +43 1 260 680 (main)
                          john.gilardi@novartis.com  kurt.leidner@sandoz.com

            MEDIA RELEASE - COMMUNIQUE AUX MEDIAS - MEDIENMITTEILUNG


NOVARTIS RECEIVES EUROPEAN COMMISSION APPROVAL TO ACQUIRE HEXAL AG, FURTHER STEP
TOWARDS CREATING WORLD LEADER IN GENERICS

BASEL,  MAY 27, 2005 - Novartis  announced  today that it has received  approval
from  the   European   Commission   to  acquire   the   privately-held   generic
pharmaceutical  company Hexal AG of Germany.  The  acquisition is expected to be
completed in early June.

"With the  completion of this  acquisition,  Sandoz will further  strengthen its
ability to rapidly  bring the  best-quality,  cost  effective  generic  drugs to
patients and physicians,  offering more choices to meet their healthcare needs,"
said Dr. Daniel  Vasella,  Chairman and CEO of Novartis.  "The combined  company
will have outstanding  management  talent,  which combined with a dynamic,  fast
moving culture, will position the new Sandoz for strong growth and leadership in
the generics business."

Hexal  will be  integrated  into the  Sandoz  division  of  Novartis  as part of
previously  announced  strategic  acquisitions to create the world leader in the
generic drug industry.

Following the acquisitions,  Sandoz will be a leader in generic  pharmaceuticals
in Germany and in several other key regions,  and will have a strong presence in
Asia and Latin  America.  The  company  will have a  portfolio  of more than 600
active  ingredients,  in more  than  5,000  dosage  forms.  Sandoz  will  have a
competitive, broad product portfolio and geographic presence, as well as leading
development and registration  capabilities.  The combination will  significantly
strengthen its technology  base,  particularly in the application of transdermal
patches,  inhalation products,  sustained-release implants and multi-particulate
drug-delivery  dosage  forms,  and expand the  already  strong  capabilities  in
biopharmaceuticals.

"Thanks to the strength of our integration planning, Sandoz is fully prepared to
rapidly  integrate and operate as a unified  company," said Dr. Andreas Rummelt,
CEO of Sandoz.  "Our major strategy and staffing  decisions have been taken, and
we are on  course  to meet our  most  ambitious  timelines.  We will put all our
efforts towards further  building our market presence to deliver our products to
patients and physicians worldwide."

After the  acquisition,  Sandoz will employ more than 20,000 people.  Its global
headquarters will be located in Holzkirchen, Germany, by year-end.

On May 23, Novartis initiated a tender offer to acquire the publicly-held shares
of Eon Labs, Inc. (NASDAQ: ELABS), a US generic pharmaceuticals company that has
a strategic  partnership  with  Hexal.  The tender  offer,  set at USD 31.00 per
share,  is scheduled to expire on June 20, 2005, and is subject to completion of
the regulatory process and the contemporaneous  purchase of a 67.7 percent stake
in Eon  Labs  from  its  control  shareholder.  Novartis  is in the  process  of
responding  to a request from the US Federal  Trade  Commission  for  additional
information  regarding the  acquisition of Eon Labs  (commonly  referred to as a
"second request").

This document contains "forward-looking statements" within the meaning of the US
Private  Securities  Litigation  Reform  Act.  Forward-looking   statements  are
statements  that are not  historical  facts and are generally  identified by the
words "expects",  "anticipates",  "believes", "intends",



                                                                             1/3



"estimates",   "will",  or  similar  expressions,   or  by  express  or  implied
discussions regarding strategies,  plans and expectations (including synergies).
These  statements  include,  but are not limited to,  financial  projections and
estimates and their underlying assumptions, statements regarding the benefits of
the business  transactions  described  herein,  including  future  financial and
operating  results.  Such  statements  reflect the current plans,  expectations,
objectives, intentions or views of management with respect to future events, are
based on the current  beliefs and  expectations of management and are subject to
significant  risks,  uncertainties  and assumptions.  Management's  expectations
could be affected by, among other things,  competition  in general,  the general
economic environment and other risks such as, but not limited to, those referred
to in  Novartis  AG's Form 20-F on file with the U.S.  Securities  and  Exchange
Commission.  Should one or more of these risks or uncertainties materialize,  or
should  underlying  assumptions  prove  incorrect,  actual  results  may  differ
materially from those set forth or implied by the forward-looking statements.

The  following  factors,  among  others,  could cause  actual  results to differ
materially from those set forth in the forward-looking  statements:  the ability
to obtain  governmental  approvals for the transaction on the proposed terms and
schedule; the risk that the businesses will not be integrated successfully;  the
risk that the cost savings and any other  synergies from the transaction may not
be fully realized or may take longer to realize than expected;  disruption  from
the  transaction  making  it  more  difficult  to  maintain  relationships  with
customers,  employees or suppliers; social and political conditions such as war,
political  unrest and  terrorism  or natural  disasters;  and  general  economic
conditions and normal  business  uncertainty  and  competition and its effect on
pricing, spending, third-party relationships and revenues. These forward-looking
statements  speak only as of the date of this press  release and no  undertaking
has been made to update or revise them if there are changes in  expectations  or
if any events,  conditions or  circumstances  on which any such forward  looking
statement is based.

SECURITYHOLDERS  OF EON ARE URGED TO READ THE TENDER OFFER  STATEMENT  LETTER OF
TRANSMITTAL  AND OTHER  MATERIALS  RELATING TO THE TENDER OFFER, AS THEY CONTAIN
IMPORTANT  INFORMATION,  INCLUDING THE VARIOUS TERMS OF, AND  CONDITIONS TO, THE
TENDER OFFER..  SECURITYHOLDERS CAN OBTAIN A COPY OF THE TENDER OFFER STATEMENT.
LETTER OF  TRANSMITTAL  AND OTHER RELATED  MATERIALS FREE OF CHARGE AT THE SEC'S
INTERNET SITE  (http://www.sec.gov) OR FROM THE INFORMATION AGENT FOR THE TENDER
OFFER,  GEORGESON  SHAREHOLDER  COMMUNICATIONS  INC., BY CALLING (877)  278-4774
(CALL TOLL-FREE).  WE URGE EON SECURITYHOLDERS TO CAREFULLY READ THOSE MATERIALS
PRIOR TO MAKING ANY DECISIONS WITH RESPECT TO THE TENDER OFFER.

ABOUT NOVARTIS
Novartis  AG (NYSE:  NVS) is a world  leader  in  pharmaceuticals  and  consumer
health. In 2004, the Group's businesses achieved sales of USD 28.2 billion and a
pro forma net income of USD 5.6 billion.  The Group invested  approximately  USD
4.2  billion  in  R&D.  Headquartered  in  Basel,  Switzerland,  Novartis  Group
companies employ  approximately  81,400 people and operate in over 140 countries
around the world. Further information is available at www.novartis.com.

Sandoz, a Novartis  company,  is a world leader in generic  pharmaceuticals  and
develops, manufactures and markets these medicines as well as pharmaceutical and
biotechnological  active  ingredients.  Decades of experience  and know-how make
Sandoz  a  renowned  partner  in  pharmaceuticals,  biogenerics  and  industrial
products.  Sandoz employs  approximately 13,000 people in over 110 countries and
reported sales of USD 3.0 billion in 2004.


                                   # # #

CONTACTS

                                                                             2/3


JOHN GILARDI
Novartis Global Media Relations
+41 61 324 3018 (direct)
+41 61 324 2200 (main)
john.gilardi@novartis.com
- -------------------------

KURT LEIDNER
Sandoz Communications
+43 1 260 68 9611 (direct)
+43 1 260 680 (main)
kurt.leidner@sandoz.com
- -----------------------