UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of the earliest event reported): July 18, 2014 (July 18, 2014)

Valeant Pharmaceuticals International, Inc.

(Exact name of registrant as specified in its charter)

2150 St Elzéar Blvd. West

Laval, Quebec

Canada, H7L 4A8

(Address of principal executive offices) (Zip Code)

(Registrant’s telephone number, including area code): (514) 744-6792

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:

On July 18, 2014, Valeant Pharmaceuticals International, Inc. (“Valeant”) issued a press release announcing, among other things, certain financial information as of and for the quarter ended June 30, 2014. On July 18, 2014, Valeant also posted an investor presentation to its website that contained certain financial information as of and for the quarter ended June 30, 2014. A copy of the press release is attached hereto as Exhibit 99.1 and a copy of certain slides from the presentation that contained financial information for the quarter ended June 30, 2014 are attached hereto as Exhibit 99.2 and each is incorporated herein by reference.

The information in this Item 2.02, including Exhibits 99.1 and 99.2, is being furnished and shall not be deemed “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that Section. The information in this Item 2.02 and Exhibits 99.1 and 99.2 shall not be incorporated by reference into any registration statement or other document pursuant to the Securities Act of 1933, as amended.

ADDITIONAL INFORMATION

This communication does not constitute an offer to buy or solicitation of an offer to sell any securities. This communication relates to the exchange offer which Valeant has made to Allergan, Inc. (“Allergan”) stockholders. The exchange offer is being made pursuant to a tender offer statement on Schedule TO (including the offer to exchange, the letter of election and transmittal and other related offer materials) and a registration statement on Form S-4 filed by Valeant with the Securities and Exchange Commission (the “SEC”) on June 18, 2014. These materials, as they may be amended from time to time, contain important information, including the terms and conditions of the offer. In addition, Valeant has filed a preliminary proxy statement with the SEC on June 24, 2014, Pershing Square Capital Management, L.P. (“Pershing Square”) has filed a definitive solicitation statement with the SEC on July 11, 2014, and Valeant and Pershing Square (and, if a negotiated transaction is agreed, Allergan) may file one or more additional proxy statements or other documents with the SEC. This communication is not a substitute for any proxy statement, registration statement, prospectus or other document Valeant, Pershing Square and/or Allergan have filed or may file with the SEC in connection with the proposed transaction. INVESTORS AND SECURITY HOLDERS OF VALEANT AND ALLERGAN ARE URGED TO READ THE TENDER OFFER STATEMENT, REGISTRATION STATEMENT, AND ANY OTHER DOCUMENTS FILED WITH THE SEC CAREFULLY IN THEIR ENTIRETY IF AND WHEN THEY BECOME AVAILABLE AS THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED TRANSACTION. Any definitive proxy statement(s) (if and when available) will be mailed to stockholders of Allergan and/or Valeant, as applicable. Investors and security holders may obtain free copies of the tender offer statement, the registration statement and other documents (if and when available) filed with the SEC by Valeant and/or Pershing Square through the web site maintained by the SEC at http://www.sec.gov.

Information regarding the names and interests in Allergan and Valeant of Valeant and persons related to Valeant who may be deemed participants in any solicitation of Allergan or Valeant shareholders in respect of a Valeant proposal for a business combination with Allergan is available in the additional definitive proxy soliciting materials in respect of Allergan filed with the SEC by Valeant on April 21, 2014 and May 28, 2014. Information regarding the names and interests in Allergan and Valeant of Pershing Square and persons related to Pershing Square who may be deemed participants in any solicitation of Allergan or Valeant shareholders in respect of a Valeant proposal for a business combination with Allergan is available in additional definitive proxy soliciting material in respect of Allergan filed with the SEC by Pershing Square. The additional definitive proxy soliciting material referred to in this paragraph can be obtained free of charge from the sources indicated above.

SIGNATURES

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.

EXHIBIT INDEX