Catalyst Health Solutions, Inc. To Report First Quarter Financial Results On May 3, 2012

Catalyst Health Solutions, Inc. (NASDAQ: CHSI) will release its first quarter 2012 financial results on Thursday, May 3, 2012, before the market opens.

About Catalyst Health Solutions, Inc. ( www.chsi.com ):

Catalyst Health Solutions, Inc., the fastest growing national PBM in the U.S., is built on strong, innovative principles in the management of prescription drug benefits and provides an unbiased, client-centered philosophy resulting in industry-leading client retention rates. The Company's subsidiaries include Catalyst Rx, a full-service pharmacy benefit manager (PBM) serving more than 18 million lives in the United States and Puerto Rico; HospiScript Services, LLC, one of the largest providers of PBM services to the hospice industry; FutureScripts, LLC, a full-service PBM serving approximately one million lives in the mid-Atlantic region; and a fully integrated prescription mail service facility. The Company's clients include self-insured employers, including state and local governments, managed care organizations, unions, hospices, third-party administrators and individuals.

This press release may contain "forward-looking statements" as defined in the Private Securities Litigation Reform Act of 1995. These statements involve a number of risks and uncertainties that might materially affect our results, particularly those risks referred to in our Annual Report on Form 10-K for the year ended December 31, 2011, under "Item 1A. Risk Factors." Readers are urged to carefully review and consider the various disclosures made in our Annual Report on Form 10-K, our Forms 10-Q, and our other filings with the Securities and Exchange Commission that attempt to advise interested parties of the risks and uncertainties that may affect our business. Catalyst Health Solutions, Inc. does not undertake any obligation to update forward-looking statements, whether as a result of new information, future events, or other developments.

Transaction Forward-Looking Statements

In addition, numerous factors could cause actual results with respect to the proposed merger with SXC to differ materially from those in the forward-looking statements, including without limitation, the possibility that the expected efficiencies and cost savings from the proposed merger will not be realized, or will not be realized within the expected time period; the risk that the SXC and Catalyst businesses will not be integrated successfully; the ability to obtain governmental approvals of the proposed merger on the proposed terms and schedule contemplated by the parties; the failure of shareholders of SXC or Catalyst to approve the proposed merger; disruption from the proposed merger making it more difficult to maintain business and operational relationships; the risk of customer attrition; the possibility that the proposed merger does not close, including, but not limited to, due to the failure to satisfy the closing conditions; and the ability to obtain the financing contemplated to fund a portion of the consideration to be paid in the proposed merger and the terms of such financing.

Important Additional Information

This communication does not constitute an offer to sell or the solicitation of an offer to buy any securities or a solicitation of any vote or approval. This communication is being made in respect of the proposed merger involving Catalyst and SXC. The proposed merger will be submitted to the shareholders of Catalyst and the shareholders of SXC for their consideration. In connection therewith, the parties intend to file relevant materials with the SEC, including a joint proxy statement/prospectus that will be mailed to shareholders. Such documents, however, are not currently available. BEFORE MAKING ANY VOTING OR INVESTMENT DECISIONS, INVESTORS AND SECURITY HOLDERS OF CATALYST AND/OR SXC ARE URGED TO READ THE JOINT PROXY STATEMENT/PROSPECTUS REGARDING THE PROPOSED MERGER AND ANY OTHER RELEVANT DOCUMENTS THAT WILL BE FILED WITH THE SEC CAREFULLY AND IN THEIR ENTIRETY WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED MERGER. Investors and security holders may obtain free copies of the proxy statement/prospectus and other documents containing important information about Catalyst and SXC, once such documents are filed with the SEC, through the website maintained by the SEC at www.sec.gov. Copies of the documents filed with the SEC by SXC will be available free of charge on SXC's website at www.sxc.com under the heading "Investor Information" or by contacting SXC's Investor Relations Department at 630-577-3100. Copies of the documents filed with the SEC by Catalyst will be available free of charge on Catalyst's website at www.catalysthealthsolutions.com under the heading "Investor Information" or by contacting Catalyst's Investor Relations Department at 301-548-2900.

SXC, Catalyst and certain of their respective directors, executive officers and other members of management and employees may be deemed to be participants in the solicitation of proxies in connection with the proposed merger. Information about the directors and executive officers of SXC is set forth in its proxy statement for its 2012 annual meeting of stockholders, which was filed with the SEC on April 2, 2012. Information about the directors and executive officers of Catalyst is set forth in its proxy statement for its 2011 annual meeting of shareholders, which was filed with the SEC on April 28, 2011. These documents can be obtained free of charge from the sources indicated above. Other information regarding the participants in the proxy solicitation and a description of their direct and indirect interests, by security holdings or otherwise, will be contained in the joint proxy statement/prospectus and other relevant materials to be filed with the SEC when they become available.

Copyright Business Wire 2010

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