<ARTICLE> 5 <LEGEND> This schedule contains summary financial information extracted from Schering-Plough Corporation and subsidiaries consolidated Financial Statements, and related Exhibits for the three months ended March 31, 1998, and is qualified in its entirety by reference to such financial statements. </LEGEND> <MULTIPLIER> 1000000 <PERIOD-TYPE> 3-MOS <FISCAL-YEAR-END> DEC-31-1998 <PERIOD-END> MAR-31-1998 <CASH> 622 <SECURITIES> 0 <RECEIVABLES> 794 <ALLOWANCES> 0 <INVENTORY> 721 <CURRENT-ASSETS> 3035 <PP&E> 3765 <DEPRECIATION> 1260 <TOTAL-ASSETS> 6651 <CURRENT-LIABILITIES> 2684 <BONDS> 46 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 1015 <OTHER-SE> 2133 <TOTAL-LIABILITY-AND-EQUITY> 6651 <SALES> 1908 <TOTAL-REVENUES> 1908 <CGS> 380 <TOTAL-COSTS> 380 <OTHER-EXPENSES> 224 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 0 <INCOME-PRETAX> 596 <INCOME-TAX> 146 <INCOME-CONTINUING> 450 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 450 <EPS-PRIMARY> .61 <EPS-DILUTED> .61