Pharsight Corporation Announces Its Newest WinNonlin(R) AutoPilot(TM) Customer

MOUNTAIN VIEW, Calif., April 2, 2008 /PRNewswire-FirstCall/ -- Pharsight Corporation , a leading provider of software and strategic services for optimizing clinical drug development, today announced that a major European pharmaceutical research and development firm has purchased floating licenses of WinNonlin AutoPilot to use in conjunction with their licenses of WinNonlin. The firm is the sixth to adopt WinNonlin AutoPilot.

WinNonlin AutoPilot is configurable software that pre-clinical and clinical research scientists can use to automate common or repetitive tasks during clinical pharmacokinetic (PK) analysis thus saving time in the generation of report-ready tables, charts, listings, and graphs. Using WinNonlin AutoPilot, companies can increase their productivity while improving the quality and consistency of analyses and reports.

Adopting an automation product that continues to evolve and improve as a replacement to custom automation systems was the major driver for the firm's decision to invest in WinNonlin AutoPilot. The firm already benefits from the use of Pharsight(R) Knowledgebase Server(TM) (PKS(TM)) to store study data and results in a single, secure, accessible repository for PK/PD data. Adding WinNonlin AutoPilot moves the firm toward Pharsight's best practices paradigm for PK/PD analysis.

"Using WinNonlin AutoPilot, customers can significantly increase their capacity for PK/PD analysis and reporting," said Shawn O'Connor, president, chief executive officer and chairman of Pharsight. "When used with PKS, the customer can build a validated workflow to achieve quicker decisions from PK/PD analyses, while improving scientific productivity by reducing non-research related activities such as data acquisition and report formatting."

About WinNonlin AutoPilot

AutoPilot orchestrates PK analyses by selecting input data from a user's local file system or Pharsight Knowledgebase Server(TM) ("PKS"), and then directs WinNonlin to perform analyses and produce report quality tables, figures, and text output (e.g., in Microsoft(R) Excel(TM), SigmaPlot(R), and Microsoft Word(TM)) for regulatory submissions and interim reports. Formatted PK analyses outputs must reflect the requirements and SOPs of each research organization, and WinNonlin AutoPilot provides a user interface that allows extensive configuration of formatting and business rules to enable clear communication of standards and immediate use across the organization. PK analyses that can be automated include noncompartmental analysis for different study designs and inferential statistics (e.g., bioequivalence testing), as well as comparisons between analytes, dose routes or other conditions. Used in conjunction with PKS and PKS Reporter(TM), WinNonlin AutoPilot provides standardized, regulatory compliant, secure and automatic generation of routine analyses and reports. Used independently of PKS and PKS Reporter, WinNonlin AutoPilot can provide significant return on investment through productivity gains and quality improvements in PK analysis and reporting.

About Pharsight Corporation

Pharsight Corporation develops and markets integrated products and services that enable pharmaceutical and biotechnology companies to achieve significant and enduring improvements in the development and use of therapeutic products. The company's goal is to help customers reduce the time, cost and risk of drug development, as well as optimize the post approval marketing and use of pharmaceutical products.

Pharsight's approach enhances the fundamental element of drug development success: strong decision making. By adopting the Pharsight approach, customers acquire a new decision-making process with the potential to systematically improve every level and phase of their business and scientific processes. Pharsight Corporation is headquartered in Mountain View, California. Information about Pharsight is available at http://www.pharsight.com.

Forward Looking Statements

The statements in this press release related to the performance of Pharsight products are forward looking statements. Forward looking statements are inherently speculative, and actual results may differ materially from Pharsight's expectations due to a variety of factors, including: changes in FDA regulations may affect the demand for the product. and customers may not perceive the benefits of the product to be the same as Pharsight believes them to be. Other risk factors relating to Pharsight are disclosed in the company's most recent Form 10Q filed with the Securities and Exchange Commission on February 14, 2008. All forward looking statements are based on information available to the company on the date hereof, and the company assumes no obligation to update such statements.

Registered Trademarks and Trademarks

Pharsight, Pharsight Knowledgebase Server, PKS, WinNonlin AutoPilot, PKS Reporter and WinNonlin are trademarks or registered trademarks of Pharsight Corporation. Word, Excel, and SigmaPlot, are trademarks or registered trademarks of their respective holders.

CONTACT: Investors, Matthew Selinger or Doug Sherk, +1-415-896-6820, or
media, Steve DiMattia, +1-646-201-5445, or Donald Takaya, +1-415-896-6820,
all of EVC Group, for Pharsight Corporation

Web site: http://www.pharsight.com/

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