~43 spots leftby Apr 2026

Adjunctive Pimavanserin in Subjects With Major Depressive Disorder and Inadequate Response to Antidepressant Treatment

Recruiting at84 trial locations
Age: 18+
Sex: Any
Travel: May Be Covered
Time Reimbursement: Varies
Trial Phase: Phase 3
Waitlist Available
Sponsor: ACADIA Pharmaceuticals Inc.
Stay on Your Current Meds
Pivotal Trial (Near Approval)
Prior Safety Data
Breakthrough Therapy

Trial Summary

What is the purpose of this trial?

To evaluate the efficacy and safety of adjunctive pimavanserin compared to placebo in subjects with major depressive disorder who have an inadequate response to antidepressant therapy

Research Team

Eligibility Criteria

Inclusion Criteria

Adult patients, aged 18 years and above
A clinical diagnosis of major depressive disorder (MDD)
Citalopram
See 7 more

Treatment Details

Interventions

  • Pimavanserin (Serotonin inverse agonist/antagonist)
  • Placebo (Drug)
Participant Groups
2Treatment groups
Experimental Treatment
Placebo Group
Group I: Drug - pimavanserinExperimental Treatment1 Intervention
Pimavanserin 34 mg tablets
Group II: PlaceboPlacebo Group1 Intervention
Placebo tablets

Find a Clinic Near You

Who Is Running the Clinical Trial?

ACADIA Pharmaceuticals Inc.

Lead Sponsor

Trials
49
Recruited
11,700+
Founded
1993
Headquarters
San Diego, USA
Known For
Neurological Disorders
Top Products
Nuplazid (pimavanserin), Daybue (trofinetide)