<ARTICLE> 5
<LEGEND>
This Schedule contains financial data extracted from Schering-Plough Corporation
and subsidiaries consolidated financial statements for the six months ended June
30, 2000, and is qualified in its entirety by reference to such financial
statements.

<MULTIPLIER> 1000000

                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-2000
<PERIOD-END>                               JUN-30-2000
<CASH>                                            2039
<SECURITIES>                                         0
<RECEIVABLES>                                     1416
<ALLOWANCES>                                         0
<INVENTORY>                                        951
<CURRENT-ASSETS>                                  5472
<PP&E>                                            4544
<DEPRECIATION>                                    1515
<TOTAL-ASSETS>                                   10123
<CURRENT-LIABILITIES>                             3536
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                          1015
<OTHER-SE>                                        4608
<TOTAL-LIABILITY-AND-EQUITY>                     10123
<SALES>                                           5048
<TOTAL-REVENUES>                                  5048
<CGS>                                              946
<TOTAL-COSTS>                                      946
<OTHER-EXPENSES>                                   635
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                   1660
<INCOME-TAX>                                       398
<INCOME-CONTINUING>                               1262
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                      1262
<EPS-BASIC>                                        .86
<EPS-DILUTED>                                      .85