A Study to Evaluate the Safety and Efficacy of IPX203 in Parkinson's Disease Participants With Motor Fluctuations
Public ClinicalTrials.gov record NCT03670953. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
A Randomized Controlled Study to Compare the Safety and Efficacy of IPX203 With Immediate-Release Carbidopa-Levodopa in Parkinson's Disease Patients With Motor Fluctuations
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
To evaluate the safety and efficacy of IPX203 (carbidopa and levodopa) extended-release capsules (IPX203 ER CD-LD) in comparison to immediate release (IR) CD-LD in the treatment of CD-LD-experienced participants with Parkinson's disease (PD) who have motor fluctuations.
Study identification
- NCT ID
- NCT03670953
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Phase 3
- Enrollment
- 630 participants
Conditions and interventions
Conditions
Interventions
- IR CD-LD Drug
- IPX203 ER CD-LD Drug
- Placebo Matching IPX203 Other
- Placebo Matching IR CD-LD Other
Drug · Other
Eligibility (public fields only)
- Age range
- 40 Years and older
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Nov 6, 2018 (Actual)
- Primary completion
- Jun 15, 2021 (Actual)
- Completion
- Jun 15, 2021 (Actual)
- Last update posted
- Feb 9, 2023
2018 – 2021
United States locations
- U.S. sites
- 56
- U.S. states
- 23
- U.S. cities
- 49
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Xenoscience, Inc. (102) | Phoenix | Arizona | 85004 | — |
| St. Joseph's Hospital & Medical Center/ Barrow Neurological Institute (156) | Phoenix | Arizona | 85013 | — |
| Clinical Trials, Inc. (113) | Little Rock | Arkansas | 72205 | — |
| University of Arkansas for Medical Sciences (117) | Little Rock | Arkansas | 72205 | — |
| Loma Linda University Health Care, Department of Neurology (137) | Loma Linda | California | 92354 | — |
| Keck School of Medicine of USC/University of Southern California (106) | Los Angeles | California | 90033 | — |
| Hoag Memorial Hospital Presbyterian (134) | Newport Beach | California | 92663 | — |
| SC3 Research - Pasadena (148) | Pasadena | California | 91105 | — |
| SC3 Research - Reseda (146) | Reseda | California | 91335 | — |
| University of Colorado Hospital Anschutz Outpatient Pavilion (120) | Aurora | Colorado | 80045 | — |
| Rocky Mountain Movement Disorders Center (116) | Englewood | Colorado | 80113 | — |
| Christiana Care Neurology Specialists (153) | Newark | Delaware | 19713 | — |
| JEM Research Institute (136) | Atlantis | Florida | 33462 | — |
| Visionary Investigators Network (168) | Aventura | Florida | 33180 | — |
| University of Miami-UHealth at Boca Raton (152) | Boca Raton | Florida | 33131 | — |
| Parkinson's Disease and Movement Disorders Center of Boca Raton (121) | Boca Raton | Florida | 33486 | — |
| MD Clinical (111) | Hallandale | Florida | 33009 | — |
| Infinity Clinical Research (104) | Hollywood | Florida | 33024 | — |
| University of Florida Health Science Center(129) | Jacksonville | Florida | 32209 | — |
| Neurology Associates, P.A. (125) | Maitland | Florida | 32751 | — |
| University of Miami (149) | Miami | Florida | 33136 | — |
| Medical Professional Clinical Research Center, INC (163) | Miami | Florida | 33165 | — |
| Parkinsons's Disease Treatment Center of Southwest Florida (131) | Port Charlotte | Florida | 33980 | — |
| Infinity Clinical Research, LLC (105) | Sunrise | Florida | 33351 | — |
| University of South Florida (114) | Tampa | Florida | 33613 | — |
| Premiere Research Institute at Palm Beach Neurology (174) | West Palm Beach | Florida | 33407 | — |
| Charter Research (166) | Winter Park | Florida | 32792 | — |
| Emory Brain Health Center (110) | Atlanta | Georgia | 30329 | — |
| NeuroStudies.net, LLC (155) | Decatur | Georgia | 30033 | — |
| Northwestern Medical Group Neurology Clinic(145) | Chicago | Illinois | 60611 | — |
| Central DuPage Hospital (151) | Winfield | Illinois | 60190 | — |
| Indiana University Health Neuroscience Center (164) | Indianapolis | Indiana | 46202 | — |
| University of Kansas Medical Center (118) | Kansas City | Kansas | 66160 | — |
| Quest Research Institute (103) | Farmington Hills | Michigan | 48334 | — |
| Henry Ford West Bloomfield Hospital (100) | West Bloomfield | Michigan | 483222 | — |
| Struthers Parkinson's Center (130) | Golden Valley | Minnesota | 55427 | — |
| Washington University (109) | St Louis | Missouri | 63110 | — |
| Cleveland Clinic Lou Ruvo Center for Brain Health (142) | Las Vegas | Nevada | 89106 | — |
| Roseman Medical Research Institute/Roseman Medical Group (154) | Las Vegas | Nevada | 89118 | — |
| Albany Medical College (139) | Albany | New York | 12208 | — |
| Mount Sinai West-Department of Neurology(172) | New York | New York | 10019 | — |
| Wake Forest Baptist Health Sciences (127) | Winston-Salem | North Carolina | 27157 | — |
| Ucgni (133) | Cincinnati | Ohio | 45219 | — |
| University Hospitals Cleveland Medical Center (123) | Cleveland | Ohio | 44106 | — |
| Cleveland Clinic (144) | Cleveland | Ohio | 44195 | — |
| University of Toledo, Gardner-McMaster Parkinson Center (122) | Toledo | Ohio | 43614 | — |
| Movement Disorder Clinic of Oklahoma (115) | Tulsa | Oklahoma | 74136 | — |
| Medical University of South Carolina (150) | Charleston | South Carolina | 29425 | — |
| The Vanderbilt Clinic(158) | Nashville | Tennessee | 37232 | — |
| Neurology Consultants of Dallas, PA (108) | Dallas | Texas | 75251 | — |
| University of Texas Southwestern Medical Center (143) | Dallas | Texas | 75390-9184 | — |
| Houston Methodist Neurological Institute/Movement Disorders Clinic (135) | Houston | Texas | 77030 | — |
| Inova Medical Group-Neurology I (147) | Alexandria | Virginia | 22311 | — |
| VCU Health - Neuroscience, Orthopaedic and Wellness Center (124) | Henrico | Virginia | 23233 | — |
| Booth Gardner Parkinson's Care Center (112) | Kirkland | Washington | 98034 | — |
| Inland Northwest Research (119) | Spokane | Washington | 99202 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
Non-U.S. locations
This page focuses on the U.S. directory. The official record also lists 52 non-U.S. sites.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT03670953, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Feb 9, 2023 · Synced Oct 17, 2026
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Open the official record
The complete public registry record, listed eligibility criteria, and available contact information for NCT03670953 live on ClinicalTrials.gov.