Product Pipeline

NUPLAZID® (pimavanserin) is the first and only prescription medication approved by the U.S. Food and Drug Administration (FDA) for the treatment of hallucinations and delusions associated with Parkinson’s disease psychosis (PDP).

In 2014, The U.S. Food and Drug Administration (FDA) granted Breakthrough Therapy designation to NUPLAZID (pimavanserin) for the treatment of Parkinson’s disease psychosis. Read more

In September 2018, the FDA completed a postmarketing review and issued a public statement reaffirming the positive benefit-risk profile of NUPLAZID (pimavanserin) for patients with Parkinson’s disease psychosis. Read more

In September 2023, the FDA made two changes to the NUPLAZID label that clarify its use in patients with Parkinson’s disease-related hallucinations and delusions, with or without dementia. This update is consistent with the current indication. There are no other findings or changes included as part of the label change. Read more

Important Safety Information

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 who experience psychosis unless their hallucinations and delusions are related to Parkinson’s disease.
• 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.
• Warnings and Precautions: 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 (e.g., Class 1A antiarrhythmics, Class 3 antiarrhythmics, certain antipsychotics or 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 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 increases NUPLAZID exposure. Reduce NUPLAZID dose to 10 mg taken orally as one tablet once daily.
  • Coadministration with strong or moderate CYP3A4 inducers reduces NUPLAZID exposure. Avoid concomitant use of strong or moderate CYP3A4 inducers with NUPLAZID.

Please read the full Prescribing Information, including Boxed WARNING

DAYBUE™ (trofinetide) is the first and only treatment approved by the U.S. Food and Drug Administration (FDA) specifically indicated for Rett syndrome in adults and pediatric patients two years of age and older. Read more.

Acadia holds an exclusive Global License Agreement with Neuren Pharmaceuticals for the development and commercialization of trofinetide for Rett syndrome and other indications. Read more. 

Important Safety Information

• Warnings and Precautions
  • Diarrhea: In a 12-week study and in long-term studies, 85% of patients treated with DAYBUE experienced diarrhea. In those treated with DAYBUE, 49% either had persistent diarrhea or recurrence after resolution despite dose interruptions, reductions, or concomitant antidiarrheal therapy. Diarrhea severity was of mild or moderate severity in 96% of cases. In the 12-week study, antidiarrheal medication was used in 51% of patients treated with DAYBUE.
    Advise patients to stop laxatives before starting DAYBUE. If diarrhea occurs, patients should notify their healthcare provider, consider starting antidiarrheal treatment, and monitor hydration status and increase oral fluids, if needed. Interrupt, reduce dose, or discontinue DAYBUE if severe diarrhea occurs or if dehydration is suspected.
  • Vomiting: In a 12-week study, vomiting occurred in 29% of patients treated with DAYBUE and in 12% of patients who received placebo.
    Patients with Rett syndrome are at risk for aspiration and aspiration pneumonia. Aspiration and aspiration pneumonia have been reported following vomiting in patients being treated with DAYBUE. Interrupt, reduce dose, or discontinue DAYBUE if vomiting is severe or occurs despite medical management.
  • Weight Loss: In the 12-week study, 12% of patients treated with DAYBUE experienced weight loss of greater than 7% from baseline, compared to 4% of patients who received placebo. In long-term studies, 2.2% of patients discontinued treatment with DAYBUE due to weight loss. Monitor weight and interrupt, reduce dose, or discontinue DAYBUE if significant weight loss occurs.

• Adverse Reactions: The common adverse reactions (≥5% for DAYBUE-treated patients and at least 2% greater than in placebo) reported in the 12-week study were diarrhea (82% vs 20%), vomiting (29% vs 12%), fever (9% vs 4%), seizure (9% vs 6%), anxiety (8% vs 1%), decreased appetite (8% vs 2%), fatigue (8% vs 2%), and nasopharyngitis (5% vs 1%).

• Drug Interactions: Effect of DAYBUE on other Drugs
  • DAYBUE is a weak CYP3A4 inhibitor; therefore, plasma concentrations of CYP3A4 substrates may be increased if given concomitantly with DAYBUE. Closely monitor when DAYBUE is used in combination with orally administered CYP3A4 sensitive substrates for which a small change in substrate plasma concentration may lead to serious toxicities.
  • Plasma concentrations of OATP1B1 and OATP1B3 substrates may be increased if given concomitantly with DAYBUE. Avoid the concomitant use of DAYBUE with OATP1B1 and OATP1B3 substrates for which a small change in substrate plasma concentration may lead to serious toxicities.
• Use in Specific Population: Renal Impairment
  • DAYBUE is not recommended for patients with severe renal impairment.

DAYBUE is available as an oral solution (200mg/mL).

Please read the accompanying full Prescribing Information, also available at DAYBUEHCP.com

In June 2022, Acadia acquired Levo Therapeutics and worldwide rights to ACP-101 for the treatment of hyperphagia in Prader-Willi syndrome (PWS). The company plans to initiate a Phase 3 study in the fourth quarter of 2023. Read more.

The Phase 1 data supports ACP-204’s target product profile as a potential treatment for Alzheimer’s disease psychosis. Acadia identified the doses for planned evaluation in Phase 2. Acadia has met with FDA to discuss the clinical development plan.

Acadia secured exclusive worldwide rights to ACP-2591 in both Rett syndrome and Fragile X syndrome. ACP-2591 is currently under development by Neuren in four other rare neurodevelopmental syndromes.

Acadia and Stoke Therapeutics have a collaboration to discover, develop and commercialize novel RNA-based medicines for the potential treatment of severe and rare genetic neurodevelopmental diseases of the central nervous system (CNS). The collaboration includes SYNGAP1, MECP2 (Rett syndrome) and an undisclosed CNS target of mutual interest. Read more.