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



               John Gilardi                       Kurt Leidner
               Novartis Global Media 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 LOGO]


NOVARTIS EXTENDS TENDER OFFER FOR EON LABS, INC. THROUGH JULY 1, 2005

BASEL, JUNE 21, 2005 - Novartis  announced today that Zodnas  Acquisition Corp.,
an indirect  wholly owned  subsidiary of Novartis,  is extending its cash tender
offer to acquire all outstanding public shares of Eon Labs, Inc. (NASDAQ: ELABS)
from the prior  expiration date of 12:00 midnight New York City time on June 20,
2005 to 5:30 pm New York City time on July 1, 2005.

Accordingly,  the tender offer and withdrawal  rights will expire at 5:30 pm New
York City time on July 1, 2005.  However, if shares are not accepted for payment
by July 21,  2005,  Eon  shareholders  will be able to withdraw  their  tendered
shares at any time after July 21, 2005 and before  their shares are accepted for
payment.

Based on a  preliminary  count  by the  depositary  for the  offer,  there  were
tendered  and not  withdrawn  22,152,720  shares of Eon Labs common  stock as of
12:00  midnight  on  June  20,  2005  and an  additional  2,297,759  shares  are
guaranteed to be delivered within the next three days.

The  completion  of the tender  offer and the  purchase  by Novartis of the 67.7
percent stake in Eon Labs from Santo Holding  (Deutschland) GmbH, Eon's majority
shareholder,  are subject to the receipt of U.S. regulatory  approval.  Novartis
will purchase  Santo's  shares  immediately  following  completion of the tender
offer.

A hearing on plaintiff's motion for a preliminary  injunction in In re Eon Labs,
Inc.  Shareholders  Litigation  is currently  scheduled  for July 8, 2005 in the
Delaware  Chancery  Court in the U.S.  Novartis  does not  currently  expect  to
receive regulatory approval prior to the court's hearing. However, Novartis, Eon
and Santo have agreed that  Novartis  will not  complete the tender offer or the
purchase  of  Santo's  shares  while the motion for  preliminary  injunction  is
pending.

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", "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
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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.
Forward-looking  statements  made in  connection  with a  tender  offer  are not
subject to the "safe harbor" provided for in the Private  Securities  Litigation
Reform Act of 1995.

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.

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CONTACTS

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



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