SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                                    FORM 6-K


                        REPORT OF FOREIGN PRIVATE ISSUER
                      PURSUANT TO RULES 13a-16 OR 15d-16 OF
                       THE SECURITIES EXCHANGE ACT OF 1934

                           For the Month of April 2003
                                SANOFI-SYNTHELABO
             (Exact name of registrant as specified in its charter)


                   174, avenue de France, 75013 Paris, FRANCE
                    (Address of principal executive offices)


          (Indicate by check mark whether the registrant files or will
            file annual reports under cover 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-_______________.




                                                          sanofi~synthelabo logo





~ Investor Relations                             Paris, April 24th, 2003







         -------------------------------------------------------------

                       STRONG GROWTH IN CONSOLIDATED SALES

                          IN THE FIRST QUARTER OF 2003

                         +13.4% ON A COMPARABLE BASIS(1)
                            +5.6% ON A REPORTED BASIS

                          WORLDWIDE SUCCESS OF ELOXATIN

                    FORECAST FOR 2003 EPS(2) GROWTH CONFIRMED

         -------------------------------------------------------------


Sanofi-Synthelabo generated consolidated sales of 1,959 million euros in the
first quarter of 2003, an increase of 13.4% on a comparable basis(1) and 5.6% on
a reported basis.

Changes in Group structure(3) had an unfavorable impact of 0.5 of a percentage
point. Currency fluctuations had an unfavorable impact of 7.3 percentage points
over the quarter. Of this, more than half was due to the weakening of the US
dollar; the rest was due to the weakness of in some Latin American and Asian
currencies.


Consolidated sales by geographical region

                      ===================-------------------------------------------------------------------------
                                                                Consolidated
                      Consolidated sales  Consolidated sales    sales Q1 2002     Change on a      Change on a
   In million euros         Q1 2003      Q1 2002 (comparable)    (reported)    comparable basis   reported basis

------------------------------------------------------------------------------------------------------------------
                                                                                   
        Europe                1,155              1,064             1,070              +8.5%            +7.9%
    United States               471                358               424             +31.6%           +11.1%
  Rest of the world             333                305               361              +9.2%            -7.8%
------------------------------------------------------------------------------------------------------------------
        Total                 1,959              1,727             1,855             +13.4%            +5.6%
----------------------===================-------------------------------------------------------------------------



----------------
(1)  Comparable basis means constant Group structure and exchange rates (see
     explanatory note).
(2)  Before exceptional items and goodwill amortization
(3)  Primarily, change from 100% to 51% consolidation of Sanofi-Synthelabo-
     Fujisawa (Taiwan) in May 2002


-    In Europe, consolidated sales reached 1,155 million euros, representing a
     growth rate of 8.5% on a comparable basis, once again outperforming market
     growth.

-    In the United States, consolidated sales were 471 million euros, an
     increase of 31.6% on a comparable basis and 11.1% on a reported basis, the
     difference being entirely due to fluctuations in the exchange rate between
     the dollar and the euro. The level of comparable-basis growth was due to
     the success of Eloxatin(R), which generated sales of 100 million euros, and
     to the advance made by Ambien(R), which posted a 22.8% rise in sales on a
     comparable basis to 285 million euros. During the period, sales of
     Primacor(R) almost disappeared (2 million euros, vs. 49 million euros in
     the first quarter of 2002) following the introduction of generics in May
     2002.

-    In the rest of the world, strong growth in Asia and a recovery of the
     operations in Latin America resulted in sales of 333 million euros, up 9.2%
     on a comparable basis but down 7.8% on a reported basis. The fall in
     reported-basis figures was due to the change from 100% to 51% consolidation
     of Sanofi-Synthelabo-Fujisawa (Taiwan) and the weakness of some Latin
     American and Asian currencies.


Consolidated sales by product

Consolidated sales of the top 10 products came to 1,285 million euros, an
increase of 30.4% on a comparable basis and 21.4% on a reported basis.

The top 10 products accounted for 65.6% of consolidated sales, compared with
57.1% in the first quarter of 2002.



Sales of other products in the portfolio were 9.1% lower on a comparable basis
at 673 million euros. Setting aside the decline in sales of Ticlid(R) and the
fall in sales of Primacor(R) in the United States, sales of other products in
the portfolio remained stable (-0.3%).



---------------------------=====================-----------------------------------------------------------
 In million euros           Consolidated sales    Consolidated sales       Change on a       Change on a
                                 Q1 2003                Q1 2002         comparable basis    reported basis
                                                     (comparable)
-----------------------------------------------------------------------------------------------------------
                                                                                
 Stilnox(R)/Ambien(R)               342                   282               +21.2%(4)           +2.0%(4)
 Plavix(R)                          289                   230               +25.5%             +22.4%
 Eloxatin(R)                        185                    57              +225.8%            +214.4%
 Aprovel(R)                         164                   121               +35.6%             +32.4%
 Fraxiparine(R)                      85                    80                +6.5%              +2.8%
 Depakine(R)                         68                    65                +4.0%              +0.6%
 Xatral(R)                           49                    43               +14.0%             +10.8%
 Cordarone(R)                        37                    39                -5.4%             -10.8%
 Solian(R)                           35                    33                +5.1%              +3.7%
 Tildiem(R)                          33                    37                -9.6%             -10.7%
-----------------------------------------------------------------------------------------------------------
 Total                            1,285                   986               +30.4%             +21.4%
---------------------------=====================-----------------------------------------------------------



(4)  Difference resulting from dollar fluctuations, most sales of this product
     being generated in the United States


-    Consolidated sales of Stilnox(R)/Ambien(R)/Myslee(R) totaled 342 million
     euros, a rise of 21.2% on a comparable basis. In the United States, this
     product generated sales of 285 million euros, up 22.8% on a comparable
     basis. In Japan, developed sales of Myslee(R) came to 16 million euros, an
     increase of 45.3% on a comparable basis.

-    Consolidated sales of Plavix(R) reached 289 million euros, an increase of
     25.5% on a comparable basis, including sales of the active ingredient and
     finished products to Bristol-Myers Squibb. Without those sales between the
     two groups, consolidated sales growth for Plavix(R) rises to 39.3%.

-    Consolidated sales of Aprovel(R)amounted to 164 million euros, an increase
     of 35.6% on a comparable basis, underlining the success of this product
     especially in Europe, where it ranks second in its class.

-    Consolidated sales of Eloxatin(R) were 185 million euros, a rise of 225.8%
     on a comparable basis. This very strong growth reflects the success of
     Eloxatin(R) in the United States, where it achieved sales of 100 million
     euros. Growth outside the United States also remains robust, with sales up
     49.2% on a comparable basis.

-    Consolidated sales of Arixtra(R) remained low at 3.6 million euros, due to
     the current narrow range of indications. The program aimed at extending
     indications for Arixtra(R) is on track.


Developed sales(5)

Developed sales, which represent the worldwide market presence of
Sanofi-Synthelabo products, came to 2,397 million euros, a rise of 9.8% on a
comparable basis. This lower-than-expected growth rate was due to the weakness
of Plavix(R) invoicing in the United States.


                     -----------------------------------------------------------
  In million euros      Plavix(R)/Iscover(R)     Aprovel(R)/Avapro(R)/Karvea(R)
                     -----------------------------------------------------------
                          Developed sales                Developed sales
                     -----------------------------------------------------------
                        Q1 2003    Change(6)          Q1 2003    Change(6)
--------------------------------------------------------------------------------
        Europe            233         +29%               146        +26%
    United States         287         -14%                98         +3%
  Rest of the world        73         +61%                46        +46%
--------------------------------------------------------------------------------
Total                     593          +6%               290        +20%
--------------------------------------------------------------------------------

Developed sales of Plavix(R)/Iscover(R) came to 593 million euros.
Outside the United States, sales rose by 35% on a comparable basis.

------------
(5) Developed sales include Sanofi-Synthelabo consolidated sales and sales
    generated under the agreements with Bristol-Myers Squibb on
    Plavix(R)/Iscover(R) (clopidogrel) and Aprovel(R)/Avapro(R)/Karvea(R)
    (irbesartan), with Fujisawa on Stilnox(R)/Myslee(R) (zolpidem), and with
    Organon on Arixtra(R)(fondaparinux) (see explanatory note)
(6) On a comparable basis


In the United States, although demand continues to grow at a sustained pace with
prescriptions (IMS YTD 03/03 retail + mail order + long term care) up 27.2%,
coupled with a favorable price effect, Plavix invoicing decreased 14% on a
comparable basis. This trend, which results in a strong decline of the level of
inventory at the wholesalers level, was due to the combined effect of the three
following factors:
-    an unfavorable basis for growth comparison, Bristol-Myers Squibb having
     initiated the inventory workdown plan for Plavix as from second quarter
     2002;
-    a destocking by certain wholesalers, who had anticipated a price increase
     of Plavix(R)in January 2003;
-    Bristol-Myers Squibb`s significant reduction in incentives to American
     wholesalers at the beginning of 2003.

Given the very strong growth in prescriptions and the current level of
inventories held by American wholesalers, full-year invoiced sales should be
close to prescription demand.


Developed sales of Aprovel(R)/Avapro(R)/Karvea(R) totaled 290 million euros.
Outside the United States, sales growth reached 30% on a comparable basis.
In the United States, Avapro(R) sales reached 98 million euros over the quarter,
in line with our forecasts and with demand which grew +15% in volume terms
(Prescriptions IMS YTD 03/03 retail + mail order + long term care) coupled with
a favorable price effect. First-quarter invoiced sales were 3% higher on a
comparable basis, due to an unfavorable comparison basis, as 30% of 2002
Avapro(R) annual sales were generated in the first quarter of that year.


Highlights of the first quarter of 2003

-    Discontinuation on January 16th, 2003, following a recommendation from the
     independent data safety and monitoring board, of the ANDROMEDA study
     evaluating tolerance of dronedarone in high risk patients with severe
     congestive heart failure. Subsequently, on February 12th, 2003, the
     independent data safety and monitoring board recommended the continuation
     of the two pivotal effectiveness trials (EURIDIS and ADONIS) which are
     evaluating dronedarone in patients with atrial fibrillation.

-    Approval in February 2003 by the US Food and Drug Administration for
     Eligard 30 mg (4-month formulation of leuprolide acetate for subcutaneous
     injection) in the treatment of advanced prostate cancer.

-    Following the filing of an application in December 2002, granting by the US
     Food and Drug Administration in March 2003 of a priority review for
     Arixtra(R)in a new indication: long-term prevention of deep venous
     thrombosis in patients undergoing hip fracture surgery.

-    Following the publication by Bristol-Myers-Squibb of restated accounts for
     the years 1999 to 2002, Sanofi-Synthelabo confirmed on March 12th, 2003
     that there was no need to modify either the Group's financial statements
     prepared in compliance with French accounting principles or the growth
     forecasts for 2003 announced on February 18th, 2003.

-    Under the authority granted by the General Meeting of Shareholders and the
     Board of Directors on May 22nd, 2002, Sanofi-Synthelabo continued the share
     buy back program initiated in 2002. As of March 31st, 2003,
     Sanofi-Synthelabo held 28 million shares acquired under this program for a
     total amount of 1.5 billion euros which correspond to 3.8% of the share
     capital.


Outlook

In a generally tougher environment, the expected growth in sales of Plavix(R),
Aprovel(R)/Avapro(R) and Stilnox(R)/Ambien(R)/Myslee(R) and the
better-than-forecast success of Eloxatin(R), allow to confirm the forecasts for
growth in sales and earnings per share(7) for 2003 as announced on February18th,
2003.
Barring major adverse events, Sanofi-Synthelabo should achieve in 2003:
-    a similar level of consolidated sales growth, on a comparable basis, to
     that achieved in 2002.
-    at an exchange rate of one euro per dollar, an increase in earnings per
     share close to 20%, before exceptional items and goodwill amortization, the
     sensitivity of this growth rate being 1% for a 3 cent movement in the
     dollar exchange rate.











--------------------------------------------------------------------------------



Explanatory Notes:

All figures in this press release are in French GAAP.

In this press release, we refer to our historical sales as "reported " sales. In
addition to reported sales, we also present and discuss two other non-GAAP
indicators that we believe are useful measurement tools to explain changes in
our reported net sales :

Comparable Sales. When we refer to the change in our net sales on a <<
comparable >> basis, we mean that we exclude the impact of exchange rate
fluctuations and changes in perimeter (acquisitions and divestitures of entities
and rights to products as well as change in consolidation ratio for consolidated
entities).
For any two periods, we exclude the impact of exchange rates by recalculating
net sales for the earlier period on the basis of exchange rates used in the
later period. We exclude the impact of acquisitions by including sales for a
portion of the prior period equal to the portion of the current period during
which we owned the entity or product rights based on sales information we
receive from the party from whom we make the acquisition. Similarly, we exclude
sales in the relevant portion of the prior period when we have sold an entity or
rights to a product.
For a change in the consolidation ratio of a consolidated entities the prior
period is recalculated on the basis of the consolidation scheme retained for the
current period

Developed sales. When we refer to << developed sales >> of a product, we mean
consolidated sales, excluding sales of products to our alliance partners, but
including those that are made through our alliances and which are not included
in our consolidated net sales (with Bristol-Myers Squibb on Plavix(R)/Iscover(R)
(clopidogrel) and Aprovel(R)/Avapro(R)/Karvea(R) (irbesartan), with Fujisawa on
Stilnox(R)/Myslee(R) (zolpidem), and with Organon on Arixtra(R) (fondaparinux)).
Our alliance partners provide us information regarding their sales in order to
allow us to calculate developed sales.
We believe that developed sales are useful measurement tool because they
demonstrate trends in the overall presence of our products in the market.



------------
(7) Before exceptional items and goodwill amortization


This release contains statements that constitute forward-looking statements
within the meaning of the U.S. Private Securities Litigation Reform Act of 1995.
These statements are based on management's current expectations or beliefs and
are subject to a number of factors and uncertainties that could cause actual
results to differ materially from those described in the forward-looking
statements. The following factors, among others, could cause actual results to
differ materially from those described in the forward-looking statements : the
ability of Sanofi-Synthelabo to expand its presence profitably in the United
States; the success of Sanofi-Synthelabo's research and development programs;
the ability of Sanofi-Synthelabo to protect its intellectual property rights;
and the risks associated with reimbursement of health care costs and pricing
reforms, particularly in the United States and France.
Investors and security holders may obtain a free copy of documents filed by
Sanofi-Synthelabo with the U.S. Securities and Exchange Commission at
www.sec.gov or directly from Sanofi-Synthelabo.


--------------------------------------------------------------------------------



REMINDER

A conference call is organised today, Thursday April 24th at 3.30 pm (Paris
time) to comment the Q1 2003 sales. In order to participate in the conference
call, the following numbers are to be dialed 10 minutes before it starts:

         France:                00 33 (0) 1 70 70 81 98          code: 546664
         United Kingdom:        00 44 (0) 207 984 75 82          code: 546664
         USA:                   00 1 719 457 26 79               code: 546664

A recorded version of the conference will be made available through Wednesday
April 30th, 2003 by dialing:

         France:                00 33 (0) 1 70 70 82 10          code: 546664#
         United Kingdom:        00 44 (0) 207 784 10 24          code: 546664#
         USA:                   00 1 719 457 08 20               code: 546664#


A live audio webcast of this conference will be made available at our internet
site (www.sanofi-synthelabo.com) and a recorded version will be archived through
Wednesday, April 30th, 2003.



Investor Relations Department
Philippe Goupit            Director of Investor Relations
Isabelle Laurent           Investor Relations Europe
Arnaud Delepine            Investor Relations Europe
Sanjay Gupta               Investor Relations US

Contacts:
E-mail: investor-relations@sanofi-synthelabo.com
Europe                                        US
Tel: + 33 1 53 77 45 45                       Tel.:  1 212 551 42 93
Fax: + 33 1 53 77 42 96                       Fax:   1 212 551 49 92




                                   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.

Dated: April 24, 2003

                                SANOFI-SYNTHELABO


                                            By:    /s/ Marie-Helene Laimay
                                                   -------------------------
                                            Name:  Marie-Helene Laimay
                                            Title: Senior Vice President and
                                                   Chief Financial Officer