UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of

the Securities Exchange Act of 1934

Filed by the Registrant  x
Filed by a Party other than the Registrant  o
Check the appropriate box:
o	Preliminary Proxy Statement
o	Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))
o	Definitive Proxy Statement
o	Definitive Additional Materials
x	Soliciting Material Pursuant to §240.14a-12

Merck & Co., Inc.
(Name of Registrant as Specified In Its Charter)
(Name of Person(s) Filing Proxy Statement, if other than the Registrant)
Payment of Filing Fee (Check the appropriate box):
x	No fee required.
o	Fee computed on table below per Exchange Act Rules 14a-6(i)(1) and 0-11.
	(1)	Title of each class of securities to which transaction applies:
	(2)	Aggregate number of securities to which transaction applies:
	(3)	Per unit price or other underlying value of transaction computed pursuant to Exchange Act Rule 0-11 (set forth the amount on which the filing fee is calculated and state how it was determined):
	(4)	Proposed maximum aggregate value of transaction:
	(5)	Total fee paid:
o	Fee paid previously with preliminary materials.
o	Check box if any part of the fee is offset as provided by Exchange Act Rule 0-11(a)(2) and identify the filing for which the offsetting fee was paid previously. Identify the previous filing by registration statement number, or the Form or Schedule and the date of its filing.
	(1)	Amount Previously Paid:
	(2)	Form, Schedule or Registration Statement No.:
	(3)	Filing Party:
	(4)	Date Filed:

This filing consists of “More Answers to Your Top Merger Questions” and “You Asked: What Is a Reverse Merger and What Is the Practical Effect of This Form of Merger?” posted on the Merck & Co., Inc. (“Merck”) internal website on March 13, 2009, in connection with the proposed transaction between Merck and Schering-Plough Corporation.

March 13, 2009

You Asked: What Is a Reverse Merger and What Is the Practical Effect of This Form of Merger?

A reverse merger is a type of transaction structure in which the target company ends up as the parent instead of the subsidiary. Merck’s reverse merger with Schering-Plough will not change how new Merck will be governed or the ownership interest of its shareholders in any way differently from a conventional merger. This means that upon completion of the merger, the following will be the same as if Merck and Schering had entered into a conventional merger:

• the percentage of the new company that will be owned by Merck shareholders,

• the percentage of the new company that will be owned by Schering-Plough shareholders,

• the value (in cash and stock) that Schering-Plough shareholders will receive when the merger is completed,

• the number of Merck directors and Schering-Plough directors that will comprise the new Merck board,

• the executive leadership of the new company, and

• the name of the new company.  

This communication contains “forward-looking statements” as that term is defined in the Private Securities Litigation Reform Act of 1995. These statements are based on Merck’s and Schering-Plough’s management’s current expectations and involve risks and uncertainties, which may cause results to differ materially from those set forth in the statements. The forward-looking statements may include statements regarding product development, product potential or financial performance. No forward-looking statement can be guaranteed, and actual results may differ materially from those projected. Merck and Schering-Plough undertake no obligation to publicly update any forward-looking statement, whether as a result of new information, future events or otherwise. Forward-looking statements in this communication should be evaluated together with the many uncertainties that affect either companies’ business, particularly those mentioned in the risk factors and cautionary statements set forth in Item 1A of either companies’ annual reports on Form 10-K for the year ended December 31, 2008, in their respective quarterly reports on Form 10-Q and in their respective current reports on Form 8-K, including, the current report on Form 8-K filed by Merck on March 10, 2009, each of which is incorporated by reference.

These reports are available at www.merck.com and www.schering-plough.com.

In connection with the proposed transaction, Schering-Plough will file a registration statement, including a joint proxy statement of Merck and Schering-Plough, with the Securities and Exchange Commission (the “SEC”). Investors are urged to read the registration statement and joint proxy statement (including all amendments and supplements to it) because they will contain important information. Investors may obtain free copies of the registration statement and joint proxy statement when they become available, as well as other filings containing information about Merck and Schering-Plough, without charge, at the SEC’s Internet web site (www.sec.gov). These documents may also be obtained for free from Schering-Plough’s Investor Relations web site (www.schering-plough.com) or by directing a request to Schering-Plough’s Investor Relations at (908) 298-7436. Copies of Merck’s filings may be obtained for free from Merck’s Investor Relations Web Site (www.merck.com) or by directing a request to Merck at Merck’s Office of the Secretary, (908) 423-1000.

Merck and Schering-Plough and their respective directors and executive officers and other members of management and employees are potential participants in the solicitation of proxies from Merck and Schering-Plough shareholders in respect of the proposed transaction.

Information regarding Schering-Plough’s directors and executive officers is available in Schering-Plough’s proxy statement for its 2008 annual meeting of shareholders, filed with the SEC on April 23, 2008, and information regarding Merck’s directors and executive officers is available in Merck’s preliminary proxy statement for its 2009 annual meeting of stockholders, filed with the SEC on February 25, 2009. Additional information regarding the interests of such potential participants in the proposed transaction will be included in the registration statement and joint proxy statement filed with the SEC in connection with the proposed transaction.