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ViroPharma Provides Update On Phase 2 Clinical Evaluation Of Subcutaneous Cinryze® (C1 Esterase Inhibitor [Human]) With Recombinant Human Hyaluronidase (rHuPH20)

The most common adverse reactions in clinical trials associated with Cinryze were rash, headache, nausea, erythema, phlebitis and local reactions at the injection site.  Adverse events of sinusitis and upper respiratory infection also were observed in clinical trials.  No drug-related serious adverse events (SAEs) were reported in clinical trials.

Please visit http://www.viropharma.com/products/cinryze.aspx for the full U.S. Prescribing Information; the prescribing information for other countries can be found at www.viropharma.com

About ViroPharma Incorporated ViroPharma Incorporated is an international biopharmaceutical company committed to developing and commercializing novel solutions for physician specialists to address unmet medical needs of patients living with diseases that have few, if any, clinical therapeutic options, including C1 esterase inhibitor deficiency, treatment of seizures in children and adolescents, adrenal insufficiency, and C. difficile infection (CDI). Our goal is to provide rewarding careers to employees, to create new standards of care in the way serious diseases are treated, and to build international partnerships with the patients, advocates, and healthcare professionals we serve.

ViroPharma routinely posts information, including press releases, which may be important to investors in the investor relations and media sections of our company's website, http://www.viropharma.com/. The company encourages investors to consult these sections for more information on ViroPharma and our business.

ViroPharma Forward Looking Statements Certain statements in this press release contain forward-looking statements that involve a number of risks and uncertainties. Forward-looking statements provide our current expectations or forecasts of future events, including the therapeutic indication and use, safety, efficacy, tolerability and potential of Cinryze and our focus, goals, strategy, research and development programs, and ability to develop pharmaceutical products, commercialize pharmaceutical products, and execute on our plans including clinical development activities with Cinryze related to subcutaneous administration in combination with rHuPH20 or alternatively as a standalone low volume formulation. There can be no assurance that clinical investigation of Cinryze in combination with rHuPH20 will resume. We may also experience delays in commencing a Phase 3 study of the subcutaneous administration of low volume Cinryze as a standalone therapy.  Additionally, future studies with low volume Cinryze as a standalone therapy may not yield positive results or support further development of Cinryze for subcutaneous administration. The FDA or EMA may view the data regarding subcutaneous administration of low volume Cinryze as a standalone therapy as insufficient or inconclusive, request additional data, require additional clinical studies, delay any decision past the time frames anticipated by us, limit any approved indications, or deny the approval of Cinryze for subcutaneous administration. These factors, and other factors, including, but not limited to those described in our annual report on Form 10-K for the year ended December 31, 2012 and Form 10-Q for the quarter ended March 31, 2013 filed with the Securities and Exchange Commission, could cause future results to differ materially from the expectations expressed in this press release. The forward-looking statements contained in this press release are made as of the date hereof and may become outdated over time. ViroPharma does not assume any responsibility for updating any forward-looking statements. These forward looking statements should not be relied upon as representing our assessments as of any date subsequent to the date of this press release.

SOURCE ViroPharma Incorporated

Copyright 2011 PR Newswire. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.
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