News Release Details

SAN DIEGO--(BUSINESS WIRE)--Sept. 25, 2007--ACADIA Pharmaceuticals Inc. (Nasdaq:ACAD), a biopharmaceutical company utilizing innovative technology to fuel drug discovery and clinical development of novel treatments for central nervous system disorders, today announced that it has been selected to be one of the inaugural companies in the new NASDAQ(R) NeuroInsights(R) Neurotech Index. The index launched today and is calculated on a price return basis (NASDAQ:NERV) and a total return basis (NASDAQ:NRVX).

The NASDAQ NeuroInsights Neurotech Index is the first index designed to track the performance of leading neurotechnology companies which are listed and actively traded on one of the three major U.S. stock exchanges. The NASDAQ NeuroInsights Neurotech Index includes companies engaged in researching, developing, manufacturing and marketing pharmaceuticals, biologics, medical devices and diagnostics for the brain and nervous system. In addition to meeting minimum market criteria, the 32 companies included in the index must be identified by NeuroInsights as significantly involved in the neurotechnology industry, which includes developing treatments and diagnostics for disorders like Alzheimer's, addiction, anxiety, depression, epilepsy, multiple sclerosis, obesity, pain, Parkinson's, schizophrenia, sensory disorders, sleep disorders, stroke, and traumatic brain injury.

About ACADIA Pharmaceuticals

ACADIA is a biopharmaceutical company utilizing innovative technology to fuel drug discovery and clinical development of novel treatments for central nervous system disorders. ACADIA currently has five mid-to-late stage clinical programs as well as a portfolio of preclinical and discovery assets directed at diseases with large unmet medical needs, including schizophrenia, Parkinson's disease psychosis, sleep maintenance insomnia, and neuropathic pain. All of the drug candidates in ACADIA's product pipeline emanate from discoveries made using its proprietary drug discovery platform. ACADIA's corporate headquarters is located in San Diego, California and it maintains research and development operations in both San Diego and Malmo, Sweden.

About NeuroInsights

NeuroInsights is the world's leading neurotechnology research and advisory firm. As the neurotechnology market authority, NeuroInsights helps investors, industry and society understand and profit from the rapid growth in drugs, devices and diagnostics for the brain and nervous system. NeuroInsights provides market reports, investment information, industry events and strategic advisory services to venture funds, startups, corporations, governments and financial institutions. For more information, visit www.neuroinsights.com.

About NASDAQ

NASDAQ is the largest U.S. equities exchange. With approximately 3,200 companies, it lists more companies and, on average, trades more shares per day than any other U.S. market. It is home to companies that are leaders across all areas of business including technology, retail, communications, financial services, transportation, media and biotechnology. NASDAQ is the primary market for trading NASDAQ-listed stocks as well as a leading liquidity pool for trading NYSE-listed stocks. For more information about NASDAQ, visit the NASDAQ Web site at www.nasdaq.com or the NASDAQ Newsroom at www.nasdaq.com/newsroom.

Forward-Looking Statements

Statements in this press release that are not strictly historical in nature are forward-looking statements. These statements include but are not limited to statements related to the progress of ACADIA's drug discovery and development programs and the benefits to be derived from ACADIA's drug candidates and preclinical programs. These statements are only predictions based on current information and expectations and involve a number of risks and uncertainties. Actual events or results may differ materially from those projected in any of such statements due to various factors, including the risks and uncertainties inherent in drug discovery, development and commercialization. For a discussion of these and other factors, please refer to ACADIA's annual report on Form 10-K for the year ended December 31, 2006 as well as other subsequent filings with the Securities and Exchange Commission. You are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date hereof. This caution is made under the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. All forward-looking statements are qualified in their entirety by this cautionary statement and ACADIA undertakes no obligation to revise or update this press release to reflect events or circumstances after the date hereof.

CONTACT: ACADIA Pharmaceuticals Inc.
Lisa Barthelemy, Director, Investor Relations
Thomas H. Aasen, Vice President and Chief Financial Officer
(858) 558-2871
or
NeuroInsights
Casey Lynch
(415) 229-3225
casey@neuroinsights.com
or
NASDAQ
Wayne Lee
(301) 978-4875
Wayne.D.Lee@NASDAQ.com

SOURCE: ACADIA Pharmaceuticals