Decision Resources, Inc., one of the world's leading research and advisory firms for pharmaceutical and health care issues, finds that although the market for treating erectile dysfunction is dominated by Pfizer's Viagra, the reported efficacy of Bayer/GlaxoSmithKline's Levitra and the longer duration of action of Lilly/Icos's Cialis could enable these drugs to significantly challenge Viagra's position as market leader.

"Sales of phosphodiesterase inhibitor drugs for erectile dysfunction including Viagra, Levitra, and Cialis exceeded $1.2 billion in the United States in 2004 and sales have grown steadily since 2000," said Dancella Fernandes, Ph.D., analyst at Decision Resources, Inc. "Viagra held a 75% market share in 2004 but after their U.S. launches in 2003, Levitra and Cialis achieved significant market shares of approximately 10% and 15%, respectively, in 2004."

The new PhysicianForum primary market research report entitled Sexual Dysfunction: Findings of a U.S. Survey of Primary Care Physicians, Urologists, HMO Medical/Pharmacy Directors, and Erectile Dysfunction and Premature Ejaculation Patients also finds that although 60% of pharmacy directors do not stipulate erectile dysfunction prescribing guidelines to physicians, a greater proportion report that they provide feedback on erectile dysfunction treatments in order to help manage drug utilization.

The report is based on a U.S. survey of 75 primary care physicians, 70 urologists, 20 HMO pharmacy directors, 150 erectile dysfunction patients, and 102 premature ejaculation patients.

About PhysicianForum

PhysicianForum is a primary research service from Decision Resources that offers access to high- volume-prescribing PCPs, specialists, and managed care organization representatives in the United States. PhysicianForum offers analysis of events and survey participants' responses to them; insight into prescribing patterns; and an examination of the implications of events and issues for the pharmaceutical market.

About Decision Resources

Decision Resources, Inc., (http://www.decisionresources.com/) is a world leader in market research publications, advisory services, and consulting designed to help clients shape strategy, allocate resources, and master their chosen markets.

All company, brand, or product names contained in this document may be trademarks or registered trademarks of their respective holders.

  For more information, contact:    Elizabeth Marshall    Decision Resources, Inc.    781-296-2563    emarshall@dresources.com 

SOURCE: Decision Resources, Inc.

CONTACT: Elizabeth Marshall of Decision Resources, Inc., +1-781-296-2563,
emarshall@dresources.com

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