<ARTICLE> 5
<LEGEND>
This schedule contains financial data extracted from Schering-Plough Corporation
and Subsidiaries consolidated financial statements for the three months ended
March 31, 2000, and is qualified in its entirety by reference to such financial
statements.
</LEGEND>
<MULTIPLIER> 1,000,000

                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-2000
<PERIOD-END>                               MAR-31-2000
<CASH>                                            1772
<SECURITIES>                                         0
<RECEIVABLES>                                     1178
<ALLOWANCES>                                         0
<INVENTORY>                                        972
<CURRENT-ASSETS>                                  4937
<PP&E>                                            4444
<DEPRECIATION>                                    1480
<TOTAL-ASSETS>                                    9490
<CURRENT-LIABILITIES>                             3220
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                          1015
<OTHER-SE>                                        4228
<TOTAL-LIABILITY-AND-EQUITY>                      9490
<SALES>                                           2406
<TOTAL-REVENUES>                                  2406
<CGS>                                              457
<TOTAL-COSTS>                                      457
<OTHER-EXPENSES>                                   290
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                    826
<INCOME-TAX>                                       198
<INCOME-CONTINUING>                                628
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                       628
<EPS-BASIC>                                        .43
<EPS-DILUTED>                                      .42