ACADIA Pharmaceuticals to Announce Second Quarter 2012 Financial Results on August 8, 2012

<0> ACADIA Pharmaceuticals Inc.Thomas H. Aasen, Executive Vice President,Chief Financial Officer and Chief Business Officer(858) 558-2871 </0>

ACADIA Pharmaceuticals Inc. (NASDAQ:ACAD), a biopharmaceutical company focused on innovative treatments that address unmet medical needs in neurological and related central nervous system disorders, today announced that it will report its unaudited financial results for the second quarter ended June 30, 2012 on Wednesday, August 8, 2012, after the U.S. financial markets close. ACADIA's management will host a conference call and webcast on Wednesday, August 8, 2012, at 5:00 p.m. Eastern Time to discuss ACADIA’s financial results and development programs.

The conference call may be accessed by dialing 800-299-8538 for participants in the U.S. or Canada and 617-786-2902 for international callers (reference passcode 54728077). A telephone replay of the conference call may be accessed through August 22, 2012 by dialing 888-286-8010 for callers in the U.S. or Canada and 617-801-6888 for international callers (reference passcode 91397157). The conference call also will be webcast live on ACADIA’s website, , under the investors section and will be archived there until August 22, 2012.

ACADIA is a biopharmaceutical company focused on innovative treatments that address unmet medical needs in neurological and related central nervous system disorders. ACADIA has a pipeline of product candidates led by pimavanserin, which is in Phase III development as a potential first-in-class treatment for Parkinson's disease psychosis. ACADIA also has clinical-stage programs for chronic pain and glaucoma in collaboration with Allergan, Inc. and two preclinical programs directed at Parkinson’s disease and other neurological disorders. All of ACADIA’s product candidates are small molecules that emanate from discoveries made using its proprietary drug discovery platform. ACADIA maintains a website at to which ACADIA regularly posts copies of its press releases as well as additional information and through which interested parties can subscribe to receive email alerts.

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 and timing of ACADIA’s drug discovery and development programs, either alone or with a partner, including clinical trials, and the benefits to be derived from ACADIA’s product candidates, in each case including pimavanserin. 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, and collaborations with others, and the fact that past results of clinical trials may not be indicative of future trial results. 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, 2011 as well as ACADIA’s 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, except as required by law.