This Amendment No. 1 (the “Amendment”) amends and supplements the Schedule 13D filed on December 3, 2012 (as amended and supplemented from time to time, the “Schedule 13D”) by Reckitt Benckiser Group plc, a public limited company organized under the laws of England and Wales (“Ultimate Parent”), Reckitt Benckiser LLC, a Delaware limited liability company and indirect wholly-owned subsidiary of Ultimate Parent (“Parent”), and Ascot Acquisition Corp., a Delaware corporation and wholly-owned subsidiary of Parent (“Purchaser,” and, together with Parent, and Ultimate Parent, the “Reporting Persons”), pursuant to the joint filing agreement filed as Exhibit 1 to the Schedule 13D. Capitalized terms used but not otherwise defined herein shall have the meanings ascribed to such terms in the Schedule 13D.

Except as otherwise set forth below, the information set forth in the Schedule 13D remains unchanged and is incorporated by reference as relevant to the items in this Amendment. This Schedule 13D is hereby amended as follows:

This Amendment hereby amends and restates Item 1 of the Schedule 13D in its entirety as set forth below:

“This Schedule 13D relates to the shares of common stock, par value $0.01 per share, (the “Common Stock”) of Schiff Nutrition International, Inc., a Delaware Corporation (the “Issuer” or “Schiff”). The address of the principal executive offices of the Issuer is 2002 South 5070 West, Salt Lake City, Utah, 84104.”

This Amendment hereby amends and restates the first paragraph of Item 2 of the Schedule 13D in its entirety as set forth below:

“This Schedule 13D is being filed jointly by the Reporting Persons with respect to the Common Stock.”

This Amendment hereby amends and supplements Item 3 of the Schedule 13D by adding the following at the end of the section:

“Pursuant to the Merger Agreement, Purchaser acquired the then outstanding Shares (as defined below) of the Issuer that were tendered pursuant to the Offer.  The total cost to acquire all the then-outstanding Class A common stock of Schiff, par value $0.01 per share (the “Class A Shares”), and the Class B common stock of the Issuer, par value $0.01 per share (the “Class B Shares,” and, together with the Class A Shares, the “Shares”), pursuant to the Offer and the Merger was approximately $1.36 billion.  The source of the funds for the acquisition of the Issuer was provided by Ultimate Parent and Parent, which provided Purchaser with sufficient funds to purchase all Shares validly tendered in the Offer and provided funding for the acquisition of the remaining Shares in the Merger. The source of such funding was a combination of cash on hand and borrowings under an approximately $6 billion privately-issued unsecured commercial paper program established by the Ultimate Parent and certain of its subsidiaries for certain acquisition and working capital needs. The commercial paper program was established in the name of Reckitt Benckiser Treasury Services plc, as issuer, with JPMorgan Chase Bank, N.A. as issuing and paying agent and is unconditionally and irrevocably guaranteed by Ultimate Parent. Interest rates under the commercial paper facility are based on market conditions at the time of issuance and the duration of borrowing and recently have ranged from 0.20% per annum to less than 0.8% per annum. Maturities for notes issued under the commercial paper facility can extend up to 364 days from the date of issuance. The commercial paper facility is rated investment grade by each of Moody’s and Standard & Poor’s and the issuance of notes under the facility is not subject to any material conditions. Any drawing under the commercial paper program in connection with the acquisition of the Shares is expected to be repaid in the ordinary course of operation from operating revenues of the Ultimate Parent and its subsidiaries.

Following the consummation of the Offer and upon the Merger, the Shares held by the Reporting Persons were cancelled and the shares of common stock issued by Purchaser and held by Parent were converted into shares of Common Stock of the Issuer.”

This Amendment hereby amends and supplements Items 4 and 6 of the Schedule 13D by adding the following at the end of each such section:

At 11:59 p.m. (New York City time) on December 14, 2012, the Offer expired as scheduled. According to Wells Fargo Shareowner Services, the depositary for the Offer (the “Depositary”), as of such time, a total of approximately 28,745,180 Shares were validly tendered pursuant to the Offer and not properly withdrawn, representing approximately 96.266% of the Shares then outstanding and approximately 90.137% of the Shares then outstanding on a fully-diluted basis. Purchaser accepted for payment all of such Shares. In addition, the Depositary received commitments to tender approximately 397,714 Shares in accordance with the guaranteed delivery procedures described in the Offer to Purchase.

Following the consummation of the Offer, Parent completed its acquisition of the Issuer through the Merger, with the Issuer continuing as the surviving corporation in the Merger and as a direct wholly-owned subsidiary of Parent and an indirect wholly-owned subsidiary of Ultimate Parent, in accordance with the short-form merger provisions of the Delaware General Corporation Law, as amended (the “DGCL”). The Merger became effective (the “Effective Time”) on December 17, 2012, upon the filing by Purchaser of a certificate of merger with the Secretary of State of the State of Delaware.

Pursuant to the terms of the Merger Agreement, the officers and directors of Purchaser became the directors of the Issuer, effective as of the Effective Time.

Pursuant to the terms of the Merger Agreement, at the Effective Time each Share issued and outstanding immediately prior to the Effective Time, (other than: (i) Shares directly owned by Parent, Purchaser or any of their subsidiaries or held in the treasury of the Issuer or owned of record by any subsidiary of the Issuer, which were canceled with no payment with respect thereto, and (ii) Shares outstanding immediately prior to the Effective Time held by a stockholder who is entitled to demand, and who properly demands, appraisal for such Shares in compliance with Section 262 of the DGCL) were canceled and converted into the right to receive the Offer Price.  The Shares of the Issuer held by the Reporting Persons were cancelled and the shares of common stock issued by Purchaser and held by Parent were converted into shares of Common Stock of the Issuer.

As a result of the Merger, on December 17, 2012, the Class A Shares were delisted from trading on the New York Stock Exchange and the Reporting Persons beneficially own all of the outstanding shares of Common Stock of the Issuer.

The foregoing summary of the Merger Agreement is qualified in its entirety by reference to such agreement, which is attached to this Schedule 13D as Exhibit 3, and which is incorporated herein by this reference.

This Amendment hereby amends and restates Item 5 of the Schedule 13D in its entirety as set forth below:

“Following the closing of the Merger on December 17, 2012, Purchaser held 100 shares of the Common Stock, representing 100.0% of the outstanding Common Stock.

(e)   Not applicable.”