PAREXEL INTERNATIONAL ANNOUNCES VICE PRESIDENT AND UNIT DIRECTOR OF CLINICAL PHARMACOLOGY

BOSTON, MA, September 15, 2004 — PAREXEL International Corporation (Nasdaq: PRXL) today announced the appointment of Antoni A. Piergies, MD, MSEE as Vice President, Clinical Pharmacology and Director of PAREXEL’s Clinical Pharmacology Research Unit (CPRU) located within the Harbor Hospital Center in Baltimore, Maryland. Dr. Piergies will be responsible for all aspects of the Unit's scientific, medical, administrative and commercial activities. In addition, he will oversee all trials conducted at this CPRU including First in Man, drug interaction, single and multiple dose, QT cardiac safety, anti-cytokine therapies, and recombinant vaccine studies.

“We are delighted to welcome Dr. Piergies to PAREXEL’s Network of Clinical Pharmacology Research Units and Bioanalytical Laboratories,” said Herman Scholtz, MD, Corporate Vice President and Worldwide Head, Clinical Pharmacology. “His extensive knowledge of medical research and the biopharmaceutical industry will help us to provide clients with reliable and predictive Proof-of-Concept in patients - essential to ensuring appropriate decisions regarding further development of compounds.”

Prior to joining PAREXEL, Dr. Piergies held positions in drug development at Pfizer (Germany and Austria), Wyeth-Ayerst Research (Philadelphia), Fujisawa (Illinois) and GlaxoSmithKline (North Carolina). He also worked as a consultant to the pharmaceutical industry. Throughout his career, he specialized in Clinical Pharmacology trials including First in Man studies. Dr. Piergies held faculty appointments at Northwestern University Medical School, the University of South Florida, the University of Pennsylvania School of Medicine and recently held the appointment of Associate Professor of Clinical Pharmacology in the Department of Medicine at Tulane University in New Orleans. He has contributed to numerous medical and scientific publications.

Dr. Piergies is a licensed medical doctor and is board-certified in clinical pharmacology. He completed electrical engineering studies earning a Masters of Science degree in Electrical Engineering from Technische Hochschule, Magdeburg, Germany. He obtained his medical degree and postgraduate research degree in medicine at Ludwig Maximillian University, Munich, Germany.

PAREXEL is one of the largest biopharmaceutical outsourcing organizations in the world, providing a broad range of knowledge-based contract research, medical marketing and consulting services to the worldwide pharmaceutical, biotechnology and medical device industries. With a commitment to providing solutions that expedite time-to-market and peak market penetration, PAREXEL has developed significant expertise in clinical trials management, data management, biostatistical analysis, medical marketing, clinical pharmacology, regulatory and medical consulting, industry training and publishing and other drug development consulting services. Its information technology subsidiary, Perceptive Informatics, Inc., develops and offers a portfolio of innovative technology-based products and services that facilitate clinical drug development and are designed to decrease time to peak sales. The technology portfolio includes web-based portal solutions and tracking tools, Interactive Voice Response Systems (IVRS), Clinical Trial Management Systems (CTMS), electronic diary and investigator database solutions. Perceptive also offers advanced medical diagnostics services to assess rapidly and objectively the safety and efficacy of new drugs, biologics, and medical devices in clinical trials. PAREXEL’s integrated services, therapeutic area depth and sophisticated information technology, along with its experience in global drug development and product launch services, represent key competitive strengths. Headquartered near Boston, MA, PAREXEL operates in 51 locations throughout 35 countries around the world, and has 4,875 employees.

PAREXEL is a registered trademark of PAREXEL International Corporation, and Perceptive Informatics is a trademark of Perceptive Informatics, Inc. All other names or marks may be registered trademarks or trademarks of their respective owners and are hereby acknowledged.

This release contains "forward-looking" statements regarding future results and events. For this purpose, any statements contained herein that are not statements of historical fact may be deemed forward-looking statements. Without limiting the foregoing, the words "believes", "anticipates", "plans", "expects", "intends", "appears", "estimates", "projects" and similar expressions are intended to identify forward-looking statements. These statements involve a number of risks and uncertainties. PAREXEL's actual future results may differ significantly from the results discussed in the forward-looking statements contained in this release. Important factors that might cause such a difference include, but are not limited to, risks associated with: actual operating performance; actual expense savings and other operating improvements resulting from recent restructurings; the loss, modification, or delay of contracts; PAREXEL's dependence on certain industries and clients; PAREXEL's ability to win new business, manage growth, and attract and retain employees; PAREXEL's ability to complete additional acquisitions and to integrate newly acquired businesses or enter into new lines of business; government regulation of the drug, medical device and biotechnology industry; consolidation within the pharmaceutical industry; competition within the biopharmaceutical services industry; the potential for significant liability to clients and third parties; the potential adverse impact of health care reform; and the effects of exchange rate fluctuations and other international economic, political, and other risks. Such factors and others are discussed more fully in the section entitled "Risk Factors" of PAREXEL’s Annual Report on Form 10-K for the year ended June 30, 2004 as filed with the SEC on September 10, 2004, which "Risk Factors" discussion is incorporated by reference in this press release. The forward-looking statements included in this press release represent PAREXEL’s estimates as of the date of this release. PAREXEL specifically disclaims any obligation to update these forward-looking statements in the future. These forward-looking statements should not be relied upon as representing PAREXEL’s estimates or views as of any date subsequent to the date of this press release.