ACADIA Pharmaceuticals Supports Parkinson’s Disease Awareness Month and World Parkinson’s Day with Local Educational Initiatives and Community Events Across the Country

ACADIA
Pharmaceuticals Inc. (Nasdaq: ACAD), a biopharmaceutical company
focused on the development and commercialization of innovative medicines
that address unmet medical needs in central nervous system disorders,
today announced support of several educational events for the
Parkinson’s disease community and their caregivers. ACADIA is committed
to supporting the Parkinson’s community and increasing awareness about
Parkinson’s disease (PD) and Parkinson’s disease psychosis (PDP), a
progressive and debilitating non-motor condition characterized by
hallucinations and delusions related to PD.

“We are driven to improve the lives of people with Parkinson’s disease
psychosis and their caregivers,” said Steve Davis, ACADIA’s Chief
Executive Officer. “This April, in honor of Parkinson’s Awareness Month
and World Parkinson’s Day, we encourage patients and their families to
attend an event, which includes important resources to help them
navigate their unique journey with Parkinson’s. We are collaborating and
pledging our support to Parkinson’s patient advocacy organizations
across the country to help make educational events possible year-round
because we understand how critical this support and engagement can be
for patients and their caregivers.”

In addition to continued support for the Michael J. Fox Foundation
(MJFF) Parkinson’s
Disease Education Consortium, an alliance between MJFF and industry
partners committed to patient and caregiver knowledge through education
programs, ACADIA is sponsoring several events and activities this
Parkinson’s Awareness Month, including:

• Moving
  Day^® walks hosted by Parkinson’s Foundation across the
  country give people with Parkinson’s and their families the
  opportunity to amplify their voice and raise money to increase
  awareness and understanding of Parkinson’s disease.
• Optimism
  Walks hosted by the American Parkinson’s Disease Association
  across the country aim to turn the Parkinson’s community’s passion and
  concern about Parkinson’s into a positive experience that raises
  awareness of the disease.
• Davis
  Phinney Foundation for Parkinson’s Victory Summit^® in
  Austin on April 13 is a national education and inspiration event,
  offering in-person and virtual access to dynamic presentations from
  leading movement disorder neurologists and therapists from across the
  country.
• Parkinson’s
  Foundation Centers for Excellence Leadership Conference hosted 45
  Parkinson’s centers to discuss in-network updates, cutting edge
  research, and the latest Parkinson’s topics to foster new ideas and
  collaboration among Parkinson’s clinicians, scientists, and
  researchers.
• Parkinson’s
  Association of San Diego Step by Step 5K Walk on April 7 included
  ACADIA employees helping raise funds to support critical resources for
  the estimated 60,000 people affected by Parkinson’s disease in San
  Diego County where ACADIA is headquartered.

"Moving Day walks are a critical component of the Parkinson’s
Foundation’s efforts to raise money and help improve life for people
affected by Parkinson’s disease," said John Lehr, President and Chief
Executive Officer of the Parkinson’s Foundation. "We appreciate ACADIA’s
support to help make events including Moving Day possible. Funds raised
through Moving Day help us deliver quality care, fund cutting-edge
research, and provide free resources for people living with Parkinson’s
and their families. Since 2011, Moving Day events across the country
have gathered more than 130,000 participants and raised nearly $22
million to improve care and advance research toward a cure.”

About Parkinson’s Disease and Parkinson’s Disease Psychosis
Parkinson’s
disease is a progressive nervous system disorder. About one million
people in the United States and from four to six million people
worldwide suffer from Parkinson’s disease. The signs and symptoms of
Parkinson’s can vary from person to person but generally fall into two
types: motor and non-motor symptoms. Hallucinations (seeing, hearing, or
experiencing things that others don’t) and delusions (believing things
that aren’t true) are non-motor symptoms of Parkinson’s disease.
Together they are known as PDP and may affect around half of people
living with PD over the course of their disease. People who develop
non-motor symptoms of PD like hallucinations or delusions often have to
deal with a broader set of challenges that can be more troublesome than
motor symptoms in terms of quality of life. These non-motor symptoms may
come with increased caregiver distress and burden and nursing home
placement. More information about PDP is available at: www.Moretoparkinsons.com.

About ACADIA Pharmaceuticals
ACADIA is a biopharmaceutical
company focused on the development and commercialization of innovative
medicines to address unmet medical needs in central nervous system
disorders. ACADIA has developed the first and only medicine approved for
the treatment of hallucinations and delusions associated with
Parkinson’s disease psychosis. In addition, ACADIA has ongoing clinical
development efforts in additional areas with significant unmet need,
including dementia-related psychosis, schizophrenia inadequate response,
schizophrenia-negative symptoms, major depressive disorder, and Rett
syndrome. This press release and further information about ACADIA can be
found at: www.acadia-pharm.com.

Important Safety Information and Indication for
NUPLAZID (pimavanserin)

WARNING: INCREASED MORTALITY IN ELDERLY PATIENTS WITH
DEMENTIA-RELATED PSYCHOSIS

• Elderly patients with dementia-related psychosis treated with
  antipsychotic drugs are at an increased risk of death.
• NUPLAZID is not approved for the treatment of patients with
  dementia-related psychosis unrelated to the hallucinations and
  delusions associated with Parkinson’s disease psychosis.

Contraindication: NUPLAZID is contraindicated in patients with a
history of a hypersensitivity reaction to pimavanserin or any of its
components. Rash, urticaria, and reactions consistent with angioedema
(e.g., tongue swelling, circumoral edema, throat tightness, and dyspnea)
have been reported.

QT Interval Prolongation: NUPLAZID prolongs the QT interval. The
use of NUPLAZID should be avoided in patients with known QT prolongation
or in combination with other drugs known to prolong QT interval
including Class 1A antiarrhythmics or Class 3 antiarrhythmics, certain
antipsychotic medications, and certain antibiotics. NUPLAZID should also
be avoided in patients with a history of cardiac arrhythmias, as well as
other circumstances that may increase the risk of the occurrence of
torsade de pointes and/or sudden death, including symptomatic
bradycardia, hypokalemia or hypomagnesemia, and presence of congenital
prolongation of the QT interval.

Adverse Reactions: The most common adverse reactions (≥2% for
NUPLAZID and greater than placebo) were peripheral edema (7% vs 2%),
nausea (7% vs 4%), confusional state (6% vs 3%), hallucination (5% vs
3%), constipation (4% vs 3%), and gait disturbance (2% vs <1%).

Drug Interactions: Coadministration with strong CYP3A4 inhibitors
(e.g., ketoconazole) increases NUPLAZID exposure. Reduce NUPLAZID dose
to 10 mg taken orally as one tablet once daily. Coadministration with
strong CYP3A4 inducers may reduce NUPLAZID exposure. Monitor patients
for reduced efficacy and an increase in NUPLAZID dosage may be needed.

Pediatric Use: Safety and efficacy have not been established in
pediatric patients.

Dosage and Administration: Recommended dose: 34 mg taken orally
once daily, without titration.

Indication: NUPLAZID is an atypical antipsychotic indicated for
the treatment of hallucinations and delusions associated with
Parkinson’s disease psychosis.

You are encouraged to report negative side effects of prescription drugs
to the FDA. Visit www.fda.gov/medwatch,
or call 1-800-FDA-1088. You can also call ACADIA Pharmaceuticals Inc. at
1-844-4ACADIA (1-844-422-2342).

NUPLAZID is available as 34 mg capsules and 10 mg tablets.

Please see the full Prescribing Information including Boxed WARNING
for NUPLAZID at https://www.nuplazid.com/pdf/NUPLAZID_Prescribing_Information.pdf.

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