UNITED STATES SECURITIES AND EXCHANGE COMMISSION
                         Washington, D. C.  20549
                                FORM 10-Q




    QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES    
                           EXCHANGE ACT OF 1934


	For the quarterly period ended March 31, 1999



	Commission file number 1-6571




	SCHERING-PLOUGH CORPORATION



  Incorporated in New Jersey                     22-1918501
  One Giralda Farms                 (I.R.S. Employer Identification No.)
  Madison, N.J. 07940-1000                     (973) 822-7000
                                             (telephone number)



Indicate by check mark whether the registrant (1) has filed all reports 
required to be filed by Section 13 or 15(d) of the Securities Exchange Act 
of 1934 during the preceding 12 months, and (2) has been subject to such 
filing requirements for the past 90 days.


                    YES    X             NO        




Common Shares Outstanding as of March 31, 1999: 1,472,111,56












PART I. - FINANCIAL INFORMATION

Item 1. Financial Statements


            SCHERING-PLOUGH CORPORATION AND SUBSIDIARIES
                 STATEMENTS OF CONSOLIDATED INCOME
                             (UNAUDITED)
           (Amounts in millions, except per share figures)

                                             Three Months
                                                Ended
                                               March 31     

                                            1999       1998 
                                               


Net sales . . . . . . . . . . .           $2,186     $1,908 
Costs and expenses:
 Cost of sales. . . . . . . . .              432        380
 Selling, general
  and administrative. . . . . .              794        712
 Research and development . . .              262        224
 Other, net . . . . . . . . . .              (15)        (4)
                                           1,473      1,312 

Income before income taxes. . .              713        596
Income taxes. . . . . . . . . .              174        146
Net Income. . . . . . . . . . .           $  539     $  450 

Basic earnings per common share           $  .37     $  .31 

Diluted earnings per common share         $  .36     $  .30 
 
Dividends per common share. . .           $  .11     $ .095 


        See notes to consolidated financial statements.
















             SCHERING-PLOUGH CORPORATION AND SUBSIDIARIES
                      CONSOLIDATED BALANCE SHEETS        
                            (UNAUDITED)
            (Amounts in millions, except per share figures)

                                             March 31,    December 31,
                                                1999          1998    
                                                    
Assets
 Cash and cash equivalents . . . . . . . .     $ 1,496        $ 1,259
 Accounts receivable, net. . . . . . . . .       1,084            704
 Inventories . . . . . . . . . . . . . . .         835            841
 Prepaid expenses, deferred income 
  taxes and other current assets . . . . .         992          1,154
     Total current assets. . . . . . . . .       4,407          3,958
 Property, plant and equipment . . . . . .       4,035          4,068
 Less accumulated depreciation . . . . . .       1,350          1,393
     Property, net . . . . . . . . . . . .       2,685          2,675
 Intangible assets, net. . . . . . . . . .         562            565
 Other assets. . . . . . . . . . . . . . .         649            642
                                               $ 8,303        $ 7,840

Liabilities and Shareholders' Equity
 Accounts payable. . . . . . . . . . . . .     $   928        $ 1,003
 Short-term borrowings and current 
  portion of long-term debt. . . . . . . .         832            558
 Other accrued liabilities . . . . . . . .       1,458          1,471
     Total current liabilities . . . . . .       3,218          3,032
Long-term liabilities  . . . . . . . . . .         827            806
Shareholders' Equity:
 Preferred shares - $1 par value 
  each; issued - none. . . . . . . . . . .           -              -
 Common shares - $.50 par value;  
  Issued: 1999 and 1998 - 2,030 . . . . .        1,015          1,015
 Paid-in capital . . . . . . . . . . . . .         448            365
 Retained earnings . . . . . . . . . . . .       7,178          6,802
 Accumulated other comprehensive income. .        (277)          (238)
     Total . . . . . . . . . . . . . . . .       8,364          7,944
 Less treasury shares, at cost - 1999 
  and 1998 - 558 shares  . . . . . . . . .       4,106          3,942
     Total shareholders' equity. . . . . .       4,258          4,002
                                               $ 8,303        $ 7,840
             

                See notes to consolidated financial statements.










               SCHERING-PLOUGH CORPORATION AND SUBSIDIARIES
                    STATEMENTS OF CONSOLIDATED CASH FLOWS
                    FOR THE THREE MONTHS ENDED MARCH 31     
                                 (UNAUDITED)
                            (Amounts in millions)

                                                1999         1998 
                                                       
Operating Activities:
 Net Income. . . . . . . . . . . . . . . .    $  539         $450
 Depreciation and amortization . . . . . .        72           56
 Accounts receivable . . . . . . . . . . .      (407)        (166)
 Inventories . . . . . . . . . . . . . . .       (15)         (14)
 Prepaid expenses and other assets . . . .       (28)         (66)
 Accounts payable and other liabilities  .       (32)          62
 Net cash provided by operating activities       129          322

Investing Activities:                                             
 Capital expenditures  . . . . . . . . . .       (79)         (41)
 Reduction of investments. . . . . . . . .       200            -
 Purchases of investments. . . . . . . . .       (52)         (26)
 Other, net. . . . . . . . . . . . . . . .         3           (4)
 Net cash provided by(used for) investing
  activities . . . . . . . . . . . . . . .        72          (71)
  
Financing Activities:
 Short-term borrowings, net. . . . . . . .       284         (128)
 Common shares repurchased . . . . . . . .      (153)         (34)
 Dividends paid to common shareholders . .      (163)        (140)
 Other, net. . . . . . . . . . . . . . . .        70          (40)
 Net cash provided by (used for) financing
  activities . . . . . . . . . . . . . . .        38         (342)

Effect of exchange rates on cash and 
 cash equivalents. . . . . . . . . . . . .        (2)          (1)  
Net increase (decrease) in cash and  
 cash equivalents  . . . . . . . . . . . .       237          (92)  
Cash and cash equivalents, beginning 
 of period . . . . . . . . . . . . . . . .     1,259          714  
Cash and cash equivalents, end of period .    $1,496         $622  
       
              See notes to consolidated financial statements.











          
          SCHERING-PLOUGH CORPORATION AND SUBSIDIARIES
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS 
                           (UNAUDITED)
         (Amounts in millions, except per share figures)


Basis of Presentation

The unaudited financial statements included herein have been 
prepared pursuant to the rules and regulations of the Securities 
and Exchange Commission for reporting on Form 10-Q.  Certain 
information and footnote disclosures normally included in 
financial statements prepared in accordance with generally 
accepted accounting principles have been condensed or omitted 
pursuant to such rules and regulations.  The statements should be 
read in conjunction with the accounting policies and notes to 
consolidated financial statements included in the Company's 1998 
Annual Report on Form 10-K.

In the opinion of management, the financial statements reflect 
all adjustments necessary for a fair statement of the operations 
for the interim periods presented.

New Accounting Pronouncement

In June 1998, the Financial Accounting Standards Board (FASB) 
issued Statement of Financial Accounting Standards (SFAS) No. 
133, "Accounting for Derivative Instruments and Hedging 
Activities."  The Company plans to adopt SFAS No. 133 effective 
January 1, 2000.  Management does not deem it cost-effective to 
engage in a formula-based program using derivative instruments to 
hedge its market risks; accordingly, this statement is not 
expected to materially impact the Company's financial statements.

Earnings Per Common Share

The shares used for basic earnings per common share and diluted 
earnings per common share are reconciled as follows (number of 
shares in millions):

                                          Three Months
                                         Ended March 31,
                                          1999     1998

Average shares outstanding for
 basic earnings per share . . . . .      1,472    1,466
Dilutive effect of options and 
 deferred stock units . . . . . . .         19       19
Average shares outstanding for
 diluted earnings per share . . . .      1,491    1,485



Comprehensive Income 

Total comprehensive income for the three months ended March 31, 
1999 and 1998 was $499 and $444, respectively.

Segment Reporting

Schering-Plough is a worldwide research-based pharmaceutical 
company engaged in the discovery, development, manufacturing and 
marketing of pharmaceutical products. Discovery and development 
efforts target the field of human health.  However, application 
in the field of animal health can result from these efforts.  The 
Company views animal health applications as a means to maximize 
the return on investments in discovery and development. The 
Company operates primarily in the prescription pharmaceutical 
marketplace.  However, the Company has sought regulatory approval 
to switch prescription products to over-the-counter (OTC) status 
as a means of extending a product's life cycle.  In this way the 
OTC marketplace is yet another means of maximizing the return on 
investments in discovery and development. Effective January 1, 
1999, the Company changed the structure of its internal 
organization to reflect this focus on pharmaceutical research and 
development.  As a result, the Company will report as one 
segment. Previously, the Company was organized into two business 
units: pharmaceuticals and healthcare.

Net sales by major therapeutic category for the:

                                            Three Months
                                               Ended
                                              March 31     

                                           1999       1998 

Allergy & Respiratory . . . . . . .        $866       $753
Anti-infectives & Anticancer. . . .         422        311
Dermatologicals . . . . . . . . . .         151        160
Cardiovasculars . . . . . . . . . .         160        173
Other Pharmaceuticals . . . . . . .         204        149
Animal Health . . . . . . . . . . .         153        145
Foot Care . . . . . . . . . . . . .          83         72
OTC . . . . . . . . . . . . . . . .          62         62
Sun Care  . . . . . . . . . . . . .          85         83
Consolidated Net Sales. . . . . . .      $2,186     $1,908 









Inventories

Inventories consisted of:             March 31,     December 31, 
                                        1999           1998  

    Finished products . . . . . . .     $395           $483  
    Goods in process. . . . . . . .      237            174
    Raw materials and supplies. . .      203            184
      Total inventories . . . . . .     $835           $841


Legal and Environmental Matters

The Company has responsibilities for environmental clean-up under 
various state, local and federal laws, including the 
Comprehensive Environmental Response, Compensation and Liability 
Act, commonly known as Superfund.  At several Superfund sites (or 
equivalent sites under state law), the Company is alleged to be a 
potentially responsible party (PRP).  The Company estimates its 
obligations for clean-up costs for Superfund sites based on 
information obtained from the federal Environmental Protection 
Agency, an equivalent state agency, and/or studies prepared by 
independent engineers, and on the probable costs to be paid by 
other PRPs.  The Company records a liability for environmental 
assessments and/or clean-up when it is probable a loss has been 
incurred and the amount can reasonably be estimated. 

The Company is also involved in various other claims and legal 
proceedings of a nature considered normal to its business, 
including product liability  cases.  The estimated costs the 
Company expects to pay in these cases are accrued when the 
liability is considered probable and the amount can reasonably be 
estimated. Consistent with trends in the pharmaceutical industry, 
the Company is self-insured for certain events.

The recorded liabilities for the above matters at March 31, 1999 
were not material.  Expected insurance recoveries have not been 
considered in determining the costs for environmental-related 
liabilities. Management believes that, except for the matters 
discussed in the following paragraphs, it is remote that any 
material liability in excess of the amounts accrued will be 
incurred.

The Company is a defendant in more than 160 antitrust actions 
commenced (starting in 1993) in state and federal courts by 
independent retail pharmacies, chain retail pharmacies and 
consumers.  The plaintiffs allege price discrimination and/or 
conspiracy between the Company and other defendants to restrain 
trade by jointly refusing to sell prescription drugs at 
discounted prices to the plaintiffs.

One of the federal cases is a class action on behalf of 
approximately two-thirds of all retail pharmacies in the United 
States and alleges a price-fixing conspiracy.  The Company agreed 
to settle the federal class action for a total of $22, which has 
been paid in full. The settlement provides, among other things, 
that the Company shall not refuse to grant discounts on brand-
name prescription drugs to a retailer based solely on its status 
as a retailer and that, to the extent a retailer can demonstrate 
its ability to affect market share of a Company brand-name 
prescription drug in the same manner as a managed care 
organization with which the retailer competes, it will be 
entitled to negotiate similar incentives subject to the rights, 
obligations, exemptions and defenses of the Robinson-Patman Act 
and other laws and regulations.  The United States District Court 
in Illinois approved the settlement of the federal class action 
on June 21, 1996.  In June 1997, the Seventh Circuit Court of 
Appeals dismissed all appeals from that settlement, and it is not 
subject to further review.  The defendants that did not settle 
the class action proceeded to trial in September 1998.  The trial 
ended in November 1998 with a directed verdict in the defendants' 
favor.  

Three of the state antitrust cases have been certified as class 
actions.  Two are class actions on behalf of certain retail 
pharmacies in California and Wisconsin, and the other is a class 
action in the District of Columbia, on behalf of consumers of 
prescription medicine. In addition, an action has been brought in 
Alabama purportedly on behalf of consumers in Alabama and several 
other states.  Plaintiffs are seeking to maintain the action as a 
class action.  The Company has settled the retailer class action 
in Wisconsin and the alleged class action in Minnesota.  The 
settlements of the state antitrust cases in Wisconsin and 
Minnesota have been approved by the respective courts.  The 
settlement amounts were not significant. In August 1998, a class 
action was brought in Tennessee purportedly on behalf of 
consumers in Tennessee and several other states.  The court has 
conditionally certified a class of consumers, but has stayed the 
case pending the resolution of an earlier filed Tennessee case, 
which the Company has settled in principle. In April 1999, a 
state consumer case was filed in state court in North Dakota. The 
Company has also recently settled the state consumer cases in all 
of the states except Alabama, Tennessee and North Dakota. Court 
approval of those settlements has been obtained. The settlement 
amounts were not material to the Company.  

Plaintiffs in these antitrust actions generally seek treble 
damages in an unspecified amount and an injunction against the 
allegedly unlawful conduct.

In May 1998, the Company settled six of the federal antitrust 
cases brought by 26 food and drug chain retailers and several 
independent retail stores.  Plaintiffs in these cases comprise 
collectively approximately one-fifth of the prescription drug 
retail market.  In April 1999, the Company settled federal 
antitrust cases brought by independent pharmacists and small 
pharmacy chains comprising about 2% of the prescription drug 
retail market.  The settlement amounts were not material to the 
Company. 


In April 1997, certain of the plaintiffs in the federal class 
action commenced another purported class action in United States 
District Court in Illinois against the Company and the other 
defendants who settled the previous federal class action.  The 
complaint alleges that the defendants conspired not to implement 
the settlement commitments following the settlement discussed 
above.  The District Court has denied the plaintiffs' motion for 
a preliminary injunction hearing.  

The Company believes all the antitrust actions are without merit 
and is defending itself vigorously.

On March 13, 1996, the Company was notified that the United 
States Federal Trade Commission (FTC) is investigating whether 
the Company, along with other pharmaceutical companies, conspired 
to fix prescription drug prices.  The investigation is ongoing. 
The Company vigorously denies that it has engaged in any price-
fixing conspiracy.

The Company is a defendant in a state court action in Texas 
brought by Foxmeyer Health Corporation, the parent of a 
pharmaceutical wholesaler that filed for bankruptcy in August 
1996.  The case is against another pharmaceutical wholesaler and 
11 pharmaceutical companies and alleges that the defendants 
conspired to drive the plaintiff's wholesaler subsidiary out of 
business.  The complaint also alleged that the defendants defamed 
the wholesaler and interfered with its business.  There are 
related actions pending in the Delaware bankruptcy proceedings of 
the wholesaler and certain of the plaintiff's claims against the 
Company have been dismissed. The Company believes that this 
action is without merit and is defending itself vigorously 
against all claims.

In February 1998, Geneva Pharmaceuticals, Inc. (Geneva) submitted 
an Abbreviated New Drug Application (ANDA) to the U.S. Food and 
Drug Administration (FDA) seeking to market a generic form of 
CLARITIN in the United States several years before the expiration 
of the Company's patents.  Geneva has alleged that certain of the 
Company's U.S. CLARITIN patents are invalid and unenforceable. 
The CLARITIN patents are material to the Company's business. In 
March 1998, the Company filed suit in federal court seeking a 
ruling that Geneva's ANDA submission constitutes willful 
infringement of the Company's patents and that its challenge to 
the Company's patents is without merit.  The Company believes 
that it should prevail in the suit. However, as with any 
litigation, there can be no assurance that the Company will 
prevail.

Copley Pharmaceutical, Inc. (Copley) and Teva Pharmaceuticals, 
Inc. (Teva) notified the Company in February 1999 and April 1999, 
respectively, that each had submitted an ANDA to the FDA seeking 
to market a generic form of CLARITIN Syrup in the United States 
before the expiration of certain of the Company's patents.  Each 
of Copley and Teva has alleged that one of those patents is 
invalid and unenforceable.  In March 1999, the Company filed suit 
in federal court seeking a ruling that Copley's ANDA submission 
and proposed marketing of a generic syrup constitutes willful 
infringement of the Company's patent and that its challenge to 
the patent is without merit.  The Company will file a similar 
suit against Teva in federal court.  The Company believes that it 
should prevail in these suits.  However, as with any litigation, 
there can be no assurance that the Company will prevail.









































Item 2.  Management's Discussion and Analysis of Financial
         Condition and Results of Operations 

Results of Operations - three months ended March 31, 1999 
compared with the corresponding period in 1998.

Sales

Consolidated sales for the first quarter advanced $278 million or 
15 percent compared with the same period in 1998. Excluding the 
effect of foreign currency exchange rate fluctuations, 
consolidated sales grew 14 percent in the quarter. This 
performance reflects worldwide sales of the CLARITIN brand of 
$565 million for the quarter as compared with $436 million for 
the corresponding period in 1998.

Net sales by major therapeutic category for the first quarter 
were as follows:

                                             $ - Millions

                                            1999      1998
     Allergy & Respiratory                 $ 866     $ 753
     Anti-infectives & Anticancer            422       311
     Dermatologicals                         151       160
     Cardiovasculars                         160       173
     Other Pharmaceuticals                   204       149
     Animal Health                           153       145
     Foot Care                                83        72
     OTC                                      62        62
     Sun Care                                 85        83
     Consolidated Net Sales               $2,186    $1,908


Worldwide net sales of allergy/respiratory products advanced 15 
percent in the quarter due to continued strong growth of the 
CLARITIN brand of nonsedating antihistamines.  Franchise sales of 
nasal inhaled steroid products, which includes NASONEX, a once-
daily corticosteroid for allergic rhinitis and VANCENASE allergy 
products, were essentially flat as increases in international 
markets were offset by decreases in our domestic business.  The 
decline in the U.S. business is due to timing of trade purchases 
which offset increased market growth.

Net sales of anti-infective and anticancer products worldwide 
increased 36 percent, primarily due to the 1998 U.S. introduction 
of REBETRON Combination Therapy containing REBETOL Capsules and 
INTRON A Injection for treatment of chronic hepatitis C in 
relapse patients.  International sales of INTRON A also 
contributed to the sales increase due to the 1998 launch of 
INTRON A solution in a multidose pen in several European markets.

Worldwide sales of cardiovascular products decreased 7 percent 
for the quarter primarily due to lower sales of IMDUR, an oral 
nitrate for angina, due to generic product introductions, and K-
DUR, a sustained-released potassium supplement, due to unusually 
high trade purchases in the first quarter of 1998.  Partially 
offsetting these declines were sales of INTEGRILIN injection, a 
platelet receptor glycoprotein inhibitor licensed for co-
marketing from COR Therapeutics.

Other pharmaceuticals consist of products that do not fit into 
the Company's major therapeutic categories and include bulk 
manufacturing and alliance revenues. 

Net sales of foot care products increased 15 percent driven by 
higher sales of insoles reflecting new product introductions and 
increased sales of antifungal products, TINACTIN and LOTRIMIN.

Income before income taxes increased 20 percent for the quarter 
compared with 1998, and represented 32.6 percent of sales versus 
31.3 percent last year.

Cost of sales as a percentage of sales decreased slightly to 19.8 
percent in the quarter from 19.9 percent in 1998 due to product 
mix improvements.

Selling, general and administrative expenses represented 36.3 
percent of sales in the first quarter of 1999 compared with 37.3 
percent last year.  The decrease in this ratio is the result of 
sales increases outpacing expense growth.

Research and development spending rose 17 percent in the quarter 
representing 12.0 percent of sales in 1999 compared to 11.7 
percent in 1998. The higher spending reflects the Company's 
funding of both internal research efforts and research 
collaborations with various partners to develop a steady flow of 
innovative products.

The effective tax rate was 24.5 percent in the three month 
periods of both 1999 and 1998.

Diluted earnings per common share advanced 20 percent in the 
first quarter to $.36 from $.30 in 1998. Foreign currency 
exchange rate changes had no impact on diluted earnings per 
common share for the first quarter of 1999.

Basic earnings per common share advanced 19 percent to $.37 from 
$.31 for the same period. 

Year 2000  

Many computer systems ("IT systems") and equipment and 
instruments with embedded microprocessors ("non-IT systems") were 
designed to recognize only the last two digits of a calendar 
year.  With the arrival of the Year 2000, these systems and 
microprocessors may encounter operating problems due to their 
inability to distinguish years after 1999 from years preceding 
1999. As a result, the Company is engaged in an extensive project 
to remediate or replace its date-sensitive IT systems and non-IT 
systems.

The project involves four phases:  (1) compiling an inventory of 
IT and non-IT systems; (2) distinguishing "critical" systems from 
"non-critical" systems; (3) remediating or replacing IT and non-
IT systems; and (4) testing the remediated or replaced IT and 
non-IT systems.  "Critical" systems for this purpose include 
systems that may affect health and safety, product manufacturing, 
product distribution, customer service and certain research 
systems.  

The following chart indicates the estimated state of completion 
of each phase of this project as of March 31, 1999:
                                                       
                                      IT Systems   Non-IT Systems 


Inventory systems                        100%            100%

Identify critical and
  non-critical systems                   100%            100%

Remediate or replace systems              99%             65%

Testing systems                           95%             65%


The Company expects to complete all phases of this project for 
all IT systems and all critical, non-IT systems by December 31, 
1999.  Work on non-critical, non-IT systems may continue into the 
year 2000.


The estimated maximum cost of the Year 2000 project is 
approximately $95 million. Approximately 55 percent of the $95 
million will be of an expense nature and 45 percent will be for 
capitalizable replacements.  As of March 31, 1999, $46 million of 
the $95 million has been incurred; $15 million has been 
capitalized and $31 million has been expensed.  No other 
significant information systems projects have been deferred as a 
result of the Company's Year 2000 project.  The book value of 
computers, software and equipment that will need to be written-
off as a result of not being Year 2000 compliant is immaterial.

The Company's internal auditors are reviewing progress on the 
Year 2000 project and provide evaluations of the Company's 
readiness to senior management on a regular basis.

Management believes that the Year 2000 issue will not have a 
material adverse effect on the Company's internal operating 
systems.  However, the Company's operations may be impacted in 
the event that computer disruption is encountered by third 
parties with whom the Company conducts significant business.  
These third parties include wholesalers, distributors, managed 
care organizations, hospitals, suppliers, clinical researchers, 
research partners and government agencies.  The Company has 
initiated communications with these third parties concerning 
their state of readiness and intends to continue these 
communications throughout 1999.  However, the Company can provide 
no assurance that these third parties will not experience 
business disruption.

The Company currently believes that the most reasonably likely 
worst case scenario concerning the Year 2000 involves potential 
business disruption among the third parties with whom it conducts 
significant business.  If a number of these third parties 
(including, in particular, wholesalers, managed care 
organizations and clinical researchers) experience business 
disruption due to a Year 2000 computer problem, the Company's 
results of operations and cash flows could be materially 
adversely affected.

During 1999, the Company will endeavor to develop contingency 
plans to address potential business disruptions at these third 
parties.  Contingency planning may include increasing inventory 
levels, establishing secondary sources of supply and 
manufacturing and maintaining backup lines of communications with 
our customers.  However, it is unlikely that any contingency plan 
can fully mitigate the impact of significant business disruptions 
among these third parties.

Certain third parties, such as retail pharmacies and wholesalers, 
may order extra inventory as part of their contingency planning. 
The impact to the Company of such contingency planning by third 
parties cannot be predicted.

The estimates and conclusions in this description of the Year 
2000 issue contain forward-looking statements and are based on 
management's estimates of future events.  Risks to completing the 
Year 2000 project include the continued availability of resources 
and qualified information systems personnel.

Additional Factors Influencing Operations

In the United States, many of the Company's pharmaceutical 
products are subject to increasingly competitive pricing as 
managed care groups, institutions, government agencies and other 
buying groups seek price discounts.  In most international 
markets, the Company operates in an environment of government-
mandated cost containment programs.  Several governments have 
placed restrictions on physician prescription levels and patient 
reimbursements, emphasized greater use of generic drugs and 
enacted across-the-board price cuts as methods of cost control.

Since the Company is unable to predict the final form and timing 
of any future domestic and international governmental or other 
health care initiatives, their effect on operations and cash 
flows cannot be reasonably estimated.

The market for pharmaceutical products is competitive.  The 
Company's operations may be affected by technological advances of 
competitors, patents granted to competitors, new products of 
competitors and generic competition as the Company's products 
mature.  In addition, patent positions can be highly uncertain 
and an adverse result in a patent dispute can preclude 
commercialization of products or negatively affect sales of 
existing products.  The effect on operations of competitive 
factors and patent disputes cannot be predicted.

Uncertainties inherent in government regulatory approval 
processes, including among other things delays in approval of new 
products, may also affect the Company's operations.  The effect 
on operations of regulatory approval processes cannot be 
predicted.

Liquidity and financial resources - three months ended March 31, 
1999

Cash generated from operations continues to be the Company's 
major source of funds to finance working capital, additions to 
property, shareholder dividends and common share repurchases.  
Cash provided by operating activities was $129 million for the 
first three months of 1999.  In 1998, cash provided by operations 
was $322 million.  The decrease in 1999 is temporary and is due 
to the timing of trade purchases within the quarter. In the first 
quarter of 1999, cash was used to pay shareholder dividends of 
$163 million, fund capital expenditures of $79 million, and 
repurchase shares for $153 million.

In October 1997, the Board of Directors authorized the repurchase 
of $1 billion of the Company's common shares.  As of March 31, 
1999 this program was approximately 29 percent complete.  

In April 1999, the Board of Directors increased the quarterly 
dividend by 14 percent to $.125 from $.11 per common share.

In September 1998, the Board of Directors authorized a 2-for-1 
stock split of the Company's common shares.  The distribution of 
the split shares was made on December 2, 1998, to the 
shareholders of record at the close of business on November 6, 
1998.  Certain 1998 amounts have been restated to reflect this 
stock split.

The Company's liquidity and financial resources continue to be 
sufficient to meet its operating needs.



Cautionary Statements for Forward Looking Information

Management's discussion and analysis set forth above contains 
certain forward looking statements, including statements 
regarding the Company's financial position and results of 
operations.  These forward looking statements are based on 
current expectations.  Certain factors have been identified by 
the Company in Exhibit 99 of the Company's December 31, 1998, 
Form 10-K filed with the Securities and Exchange Commission, 
which could cause the Company's actual results to differ 
materially from expected and historical results.  Exhibit 99 from 
the Form 10-K is incorporated by reference herein.

Item 3.

Market Risk Disclosures

As discussed in the 1998 Annual Report to Shareholders, the 
Company's exposure to market risk from changes in foreign 
currency exchange rates and interest rates, in general, is not 
material.

PART II  OTHER INFORMATION

Item 1.   Legal Proceedings

Item 3, Legal Proceedings, of Part I of the Company's Annual 
Report on Form 10-K for the fiscal year ended December 31, 1998, 
is incorporated by reference.

Reference is made to the first paragraph of Item 3, Legal 
Proceedings, of Part I of the Company's Annual Report on Form 10-
K for the fiscal year ended December 31, 1998, relating to 
lawsuits arising out of the use of synthetic estrogens. 
Subsidiaries of the Company are defendants in 250 lawsuits 
involving approximately 460 plaintiffs.  The total amount claimed 
against all defendants in all the suits amounts to more than $1.5 
billion.

Reference is made to the fifth paragraph of Item 3, Legal 
Proceedings, of Part I of the Company's Annual Report on Form 10-
K for the fiscal year ended December 31, 1998, relating to state 
antitrust cases. During the first quarter of 1999, the Company 
agreed to settle the consumer class action in California for 
approximately $1.625 million in cash and $8.34 million in free 
products donated to certain California public health clinics.  
Court approval has been obtained in all of the state consumer 
cases where settlements have been reached.  In April 1999, a 
state consumer case was filed in state court in North Dakota.  
State consumer cases remain in Alabama, Tennessee and North 
Dakota.

Reference is made to the seventh paragraph of Item 3, Legal 
Proceedings, of Part I of the Company's Annual Report on Form 10-
K for the fiscal year ended December 31, 1998, relating to 
federal antitrust cases brought by retailers.  In April 1999, the 
Company settled federal antitrust cases brought by independent 
pharmacists and small pharmacy chains comprising about 2% of the 
prescription drug retail market.  The settlement amount is not 
material to the Company.

Reference is made to the twelfth paragraph of Item 3, Legal 
Proceedings, of Part I of the Company's Annual Report on Form 10-
K for the fiscal year ended December 31, 1998, relating to 
CLARITIN patent litigation. Copley Pharmaceutical, Inc. (Copley) 
and Teva Pharmaceuticals, Inc. (Teva) notified the Company in 
February 1999 and April 1999, respectively, that each had 
submitted an Abbreviated New Drug Application (ANDA) to the U.S. 
Food and Drug Administration seeking to market a generic form of 
CLARITIN Syrup in the United States before the expiration of 
certain of the Company's patents.  Each of Copley and Teva has 
alleged that one of those patents is invalid and unenforceable.  
In March 1999, the Company filed suit in federal court seeking a 
ruling that Copley's ANDA submission and proposed marketing of 
generic syrup constitutes willful infringement of the Company's 
patent and that its challenge to the patent is without merit.  
The Company will file a similar suit in federal court concerning 
the Teva ANDA submission.  The Company believes that it should 
prevail in these suits.  However, as with any litigation, there 
can be no assurance that the Company will prevail.  

Item 4.  Submission of Matters to a Vote of Security Holders

(a) The Annual Meeting of Shareholders was held on April 27,  
    1999.

(b) Not applicable.

(c) The designation by the Board of Directors of Deloitte & 
Touche LLP to audit the books and accounts of the 
Corporation for the year ended December 31, 1999 was 
ratified by a vote of shares as follows:

FOR                AGAINST             ABSTAIN

1,263,847,338      1,876,040           3,827,563

All of the nominees for director were elected for a three-year 
term by a vote of shares, as follows:

                         FOR                    WITHHELD

Hans W. Becherer         1,262,564,040          6,986,901
Raul E. Cesan            1,262,628,585          6,922,356
Regina E. Herzlinger     1,262,425,289          7,125,652
Robert F. W. Van Oordt   1,262,334,800          7,216,141
James Wood               1,261,914,457          7,636,484

The 1999 Executive Incentive Bonus Program, adopted by the Board 
of Directors of the Corporation and as presented to the 
Shareholders on April 27, 1999, was adopted by a vote of shares 
as follows:

FOR                 AGAINST             ABSTAIN

1,205,262,999       52,982,118          11,305,824

(d)  None


Item 6.  Exhibits and Reports on Form 8-K

a)   Exhibits -  The following Exhibits are filed with this      
     document:

     Exhibit
     Number                    Description

       3(a)       - Amendment to Certificate of Incorporation

      10(a)       - Amendment to 1997 Stock Incentive Plan

27          - Financial Data Schedule


 b)  Reports on Form 8-K:

     No report was filed during the three months ended March 31, 
     1999.










































                      


SIGNATURE(S)



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.


                                Schering-Plough Corporation 
                                        (Registrant)


Date  May 13, 1999                   /s/Thomas H. Kelly      
                                        Thomas H. Kelly
                               Vice President and Controller
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