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Eisai/Pfizer's Aricept Owns a Dominating 42.4% Patient Share for First-Line Treatment of Alzheimer's Disease

Physician Familiarity and its Better Side-Effect/Safety Profile are Driving

Aricept Prescription Rates, According to a New Report from Decision


WALTHAM, Mass., Feb. 4 /PRNewswire/ -- Decision Resources, one of the world's leading research and advisory firms focusing on pharmaceutical and healthcare issues, finds that Eisai/Pfizer's Aricept owns a dominating 42.4% patient share for first-line treatment of newly diagnosed Alzheimer's disease patients. The new report entitled Treatment Algorithms in Alzheimer's Disease finds that the reasons for favoring Aricept differ between primary care physicians and neurologists. Primary care physicians prefer Aricept over other acetylcholinesterase inhibitors (AChEIs) largely because of their familiarity with the agent, while neurologists cite Aricept's side-effect/safety profile and easier titration (the dosing schedule needed for a patient to receive full therapeutic doses of a drug).

The report finds that, in first-line treatment, Aricept holds a 42.4% patient share. The two twice-per-day AChEIs -- Novartis's Exelon and Shire/Janssen/Ortho-McNeil's Razadyne hold only 2.8% and 1.4% shares, respectively. Aricept's first-line patient share also far exceeds that of the newer formulations of those two drugs, including the once-daily formulation of Razadyne, Razadyne ER.

"Aricept's critical attribute of once-daily administration was unique until the launch of Razadyne ER in 2005," said Madhuri Borde, Ph.D., analyst at Decision Resources. "However, our survey revealed that physicians prescribe Aricept more than any other AChEI, in large part because of their comfort level with the drug, and because primary care physicians have been slow to move to Razadyne ER."

About Treatment Algorithm Insight Series

Decision Resources combines in-depth primary research with the most extensive claims-based longitudinal patient-level data from PharMetrics(R) to provide exceptional insight into physicians' prescribing trends and the factors that drive therapy product choice, from diagnosis through multiple courses of treatment, for a specific disease.

For each disease examined, Decision Resources' Treatment Algorithms Insight Series provides the following:

-- Qualitative diagnosis and referral patterns for the United States

based on thought leader input and guideline recommendations.

-- Quantitative treatment algorithms based on patient-level claims data

Product share (class and specific compound level) within each line

of therapy (1st, 2nd, 3rd line).

-- Practicing physician opinion on why specific drugs are chosen for

certain patient populations.

-- Discussion of key drug combinations (including add versus switch

patterns) by lines of therapy.

-- Progression of therapy from key 1st line products (e.g., initial

treatment with Lipitor to 2nd line, 3rd line; initial treatment with

Zocor to 2nd line, 3rd line).

-- Pathway to key therapies from previous therapies (e.g., how much

Avandamet use is preceded by metformin, Avandia, or both as single


-- Qualitative analysis of 2-year forecast incorporating practicing

physician sentiment towards upcoming launches, changes in

reimbursement, etc.

About Decision Resources

Decision Resources, Inc., ( is a world leader in healthcare market research publications, advisory services, and consulting designed to help clients shape strategy, allocate resources, and master their chosen markets. Decision Resources is a Decision Resources, Inc. company.

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.


SOURCE Decision Resources
Copyright©2008 PR Newswire.
All rights reserved

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