<ARTICLE> 5
<LEGEND>
This schedule contains summary financial information extracted from
Schering-Plough Corporation and subsidiaries consolidated Financial Statements
for the six months ended June 30, 1998, and is qualified in its entirety by
reference to such financial statements.
</LEGEND>
<MULTIPLIER> 1000000
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-END>                               JUN-30-1998
<CASH>                                             707
<SECURITIES>                                         0
<RECEIVABLES>                                      840
<ALLOWANCES>                                         0
<INVENTORY>                                        745
<CURRENT-ASSETS>                                  3280
<PP&E>                                            3835
<DEPRECIATION>                                    1297
<TOTAL-ASSETS>                                    6965
<CURRENT-LIABILITIES>                             2755
<BONDS>                                             46
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                          1015
<OTHER-SE>                                        2386
<TOTAL-LIABILITY-AND-EQUITY>                      6965
<SALES>                                           4032
<TOTAL-REVENUES>                                  4032
<CGS>                                              803
<TOTAL-COSTS>                                      803
<OTHER-EXPENSES>                                   485
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                   1199
<INCOME-TAX>                                       294
<INCOME-CONTINUING>                                905
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                       905
<EPS-PRIMARY>                                     1.23
<EPS-DILUTED>                                     1.22