WASHINGTON, D.C. 20549

                                    FORM 8-K

                                 CURRENT REPORT


Date of Report (Date of earliest event reported): January 25, 2005

                          SCHERING - PLOUGH CORPORATION

             (Exact Name of Registrant as Specified in its Charter)

         New Jersey                    1-6571                  22-1918501
(State or Other Jurisdiction   (Commission File Number)       (IRS Employer
       of Incorporation)                                  Identification Number)

                            2000 Galloping Hill Road
                              Kenilworth, NJ 07033
                     (Address of Principal Executive Office)

       Registrant's telephone number, including area code: (908) 298-4000

Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of the
following provisions:

[ ]   Written communications pursuant to Rule 425 under the Securities Act (17
      CFR 230.425)

[ ]   Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR

[ ]   Pre-commencement communications pursuant to Rule 14d-2(b) under the
      Exchange Act (17 CFR 240.14d-2(b))

[ ]   Pre-commencement communications pursuant to Rule 13e-4(c) under the
      Exchange Act (17 CFR 240.13e-4(c))


Schering-Plough today issued a press release titled "Schering-Plough Reports
Financial Results for 2004 Fourth Quarter, Full Year" and provided additional
supplemental financial data. The press release is furnished as Exhibit 99.1 to
this 8-K. The supplemental financial data is furnished as Exhibit 99.2 to this


Disclosure Notice for Forward Looking Statements

This 8-K, including each exhibit, the comments of Schering-Plough officers
during our earnings teleconference/webcast on January 25, 2005 at 8:00 am (EDT),
and other written reports and oral statements made from time to time by the
company may contain "forward-looking statements" within the meaning of the
Securities Litigation Reform Act of 1995. Forward-looking statements relate to
expectations or forecasts of future events. They use words such as "anticipate,"
"believe," "could," "estimate," "expect," "forecast," "project," "intend,"
"plan," "potential," "will," and other words and terms of similar meaning in
connection with a discussion of potential future events, circumstances or future
operating or financial performance. You can also identify forward-looking
statements by the fact that they do not relate strictly to historical or current

In particular, forward-looking statements include statements relating to future
actions, ability to access the capital markets, prospective products, the status
of product approvals, future performance or results of current and anticipated
products, sales efforts, development programs, estimates of rebates, discounts
and returns, expenses and programs to reduce expenses, the cost of and savings
from reductions in work force, the outcome of contingencies such as litigation
and investigations, growth strategy and financial results.

Any or all forward-looking statements here or in other publications may turn out
to be wrong. Actual results may vary materially, and there are no guarantees
about Schering-Plough's financial and operational performance or the performance
of Schering-Plough stock. Schering-Plough does not assume the obligation to
update any forward-looking statement.

Many factors could cause actual results to differ from Schering-Plough's
forward-looking statements. These factors include inaccurate assumptions and a
broad variety of other risks and uncertainties, including some that are known
and some that are not. Although it is not possible to predict or identify all
such factors, they may include the following:

-     A significant portion of net sales are made to major pharmaceutical and
      health care products distributors and major retail chains in the United
      States. Consequently, net sales and quarterly growth comparisons may be
      affected by fluctuations in the buying patterns of major distributors,
      retail chains and other trade buyers. These fluctuations may result from
      seasonality, pricing, wholesaler buying decisions or other factors.

-     Competitive factors, including technological advances attained by
      competitors, patents granted to competitors, new products of competitors
      coming to the market, new indications for competitive products, and
      generic, prescription and/or OTC products that compete with products of
      Schering-Plough or the Merck/Schering-Plough Pharmaceuticals joint venture
      (such as competition from OTC statins, like the one approved for use in
      the U.K. for which impact in the cholesterol reduction market is not yet

-     Increased pricing pressure both in the United States and abroad from
      managed care organizations, institutions and government agencies and
      programs. In the United States, among other developments, consolidation
      among customers may increase pricing pressures and may result in various
      customers having greater influence over prescription decisions through
      formulary decisions and other policies.

-     The potential impact of the Medicare Prescription Drug, Improvement and
      Modernization Act of 2003; possible other U.S. legislation or regulatory
      action affecting, among other things, pharmaceutical pricing and
      reimbursement, including Medicaid and Medicare, involuntary approval of
      prescription medicines for over-the-counter use; and other health care
      reform initiatives and drug importation legislation. Legislation or
      regulations in markets outside the U.S. affecting product pricing,
      reimbursement or access. Laws and regulations relating to trade,
      antitrust, monetary and fiscal policies, taxes, price controls and
      possible nationalization.

-     Patent positions can be highly uncertain and patent disputes are not
      unusual. An adverse result in a patent dispute can preclude
      commercialization of products or negatively impact sales of existing
      products or result in injunctive relief and payment of financial remedies.

-     Uncertainties of the FDA approval process and the regulatory approval and
      review processes in other countries, including, without limitation, delays
      in approval of new products.

-     Failure to meet Good Manufacturing Practices established by the FDA and
      other governmental authorities can result in delays in the approval of
      products, release of products, seizure or recall of products, suspension
      or revocation of the authority necessary for the production and sale of
      products, fines and other civil or criminal sanctions. The resolution of
      manufacturing issues with the FDA discussed in Schering-Plough's 10-Ks,
      10-Qs and 8-Ks are subject to substantial risks and uncertainties. These
      risks and uncertainties, including the timing, scope and duration of a
      resolution of the manufacturing issues, will depend on the ability of
      Schering-Plough to assure the FDA of the quality and reliability of its
      manufacturing systems and controls, and the extent of remedial and
      prospective obligations undertaken by Schering-Plough.

-     Difficulties in product development. Pharmaceutical product development is
      highly uncertain. Products that appear promising in development may fail
      to reach market for numerous reasons. They may be found to be ineffective
      or to have harmful side effects in clinical or pre-clinical testing, they
      may fail to receive the necessary regulatory approvals, they may turn out
      not to be economically feasible because of manufacturing costs or other
      factors or they may be precluded from commercialization by the proprietary
      rights of others.

-     Post-marketing issues. Once a product is approved and marketed, clinical 
      trials of marketed products or post-marketing surveillance may raise 
      efficacy or safety concerns. Whether or not scientifically justified, 
      this new information could lead to recalls, withdrawals or adverse 
      labeling of marketed products, which may negatively impact sales. 
      Concerns of prescribers or patients relating to the safety or efficacy of 
      Schering-Plough products, other companies' products or pharmaceutical 
      products generally, may also negatively impact sales.

      Capsules, REMICADE, TEMODAR and NASONEX accounted for a material portion
      of Schering-Plough's 2004 revenues. If any major product were to become
      subject to a problem such as loss of patent protection, OTC availability
      of the Company's product or a competitive product (as has been disclosed
      for CLARITIN and its current and potential OTC competition), previously
      unknown side effects; if a new, more effective treatment should be
      introduced; generic availability of competitive products; or if the
      product is discontinued for any reason, the impact on revenues could be
      significant. Also, such information about important new products, such as
      ZETIA and VYTORIN, or important products in our pipeline, may impact
      future revenues. Further, sales of VYTORIN may negatively impact
      sales of ZETIA.

-     Unfavorable outcomes of government (local and federal, domestic and
      international) investigations, litigation about product pricing, product
      liability claims, other litigation and environmental concerns could
      preclude commercialization of products, negatively affect the
      profitability of existing products, materially and adversely impact
      Schering-Plough's financial condition and results of operations, or
      contain conditions that impact business operations, such as exclusion from
      government reimbursement programs.

-     Economic factors over which Schering-Plough has no control, including
      changes in inflation, interest rates and foreign currency exchange rates.

-     Instability, disruption or destruction in a significant geographic region
      - due to the location of manufacturing facilities, distribution facilities
      or customers - regardless of cause, including war, terrorism, riot, civil
      insurrection or social unrest; and natural or man-made disasters,
      including famine, flood, fire, earthquake, storm or disease.

-     Changes in tax laws including changes related to taxation of foreign

-     Changes in accounting standards promulgated by the American Institute of
      Certified Public Accountants, the Financial Accounting Standards Board,
      the SEC, or the Public Company Accounting Oversight Board that would
      require a significant change to Schering-Plough's accounting practices.


The following exhibits are furnished pursuant to Item 2.02 with this 8-K:

99.1 Press release dated January 25, 2005 titled "Schering-Plough Reports
Financial Results for 2004 Fourth Quarter, Full Year" (furnished pursuant to
Item 2.02)

99.2 Supplemental Financial Data (furnished pursuant to Item 2.02)


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 hereunto duly authorized.

Schering-Plough Corporation

By: /s/ Douglas J. Gingerella   
Douglas J. Gingerella
Vice President and Controller
(Duly Authorized Officer and
Chief Accounting Officer)

Date: January 25, 2005

Exhibit Index

The following exhibits are furnished with this 8-K:

99.1  Press release titled "Schering-Plough Reports Financial Results for 2004
      Fourth Quarter, Full Year" (furnished pursuant to Item 2.02)

99.2  Supplemental Financial Data (furnished pursuant to Item 2.02)