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ClinicalTrials.gov public records Last synced May 22, 2026, 5:33 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 1–24 of 185 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Levodopa Clear all
Terminated Phase 4 Interventional
View directory record Official record
Conditions
Parkinson Disease
Interventions
Botulinum Toxin Type A, Placebo
Biological
Lead sponsor
University of Cincinnati
Other
Eligibility
35 Years to 75 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 15, 2009 · Synced May 22, 2026, 5:33 AM EDT
Completed Phase 2 Interventional Results available
View directory record Official record
Conditions
Parkinson Disease
Interventions
Mesdopetam, Placebo
Drug
Lead sponsor
Integrative Research Laboratories AB
Industry
Eligibility
30 Years to 79 Years
Enrollment
155 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
14
States / cities
Scottsdale, Arizona • Long Beach, California • Palo Alto, California + 9 more
Source: ClinicalTrials.gov public record
Updated Mar 5, 2024 · Synced May 22, 2026, 5:33 AM EDT
Completed Not applicable Interventional Results available
View directory record Official record
Conditions
Parkinson's Disease, Levodopa
Interventions
Erythromycin, placebo
Drug
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
18 Years to 80 Years
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Feb 2, 2017 · Synced May 22, 2026, 5:33 AM EDT
Completed Phase 2 Interventional
View directory record Official record
Conditions
Parkinson Disease, Parkinsonian Syndrome
Interventions
levodopa, Mirapex (pramipexole), [123I]ß-CIT and SPECT imaging
Drug · Procedure
Lead sponsor
Institute for Neurodegenerative Disorders
Other
Eligibility
30 Years and older
Enrollment
112 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2007
U.S. locations
13
States / cities
Oxnard, California • Englewood, Colorado • New Haven, Connecticut + 9 more
Source: ClinicalTrials.gov public record
Updated Sep 28, 2010 · Synced May 22, 2026, 5:33 AM EDT
Terminated Phase 2Phase 3 Interventional
View directory record Official record
Conditions
Parkinson Disease, Dyskinesia, Drug-Induced, Dyskinesias
Interventions
Dipraglurant, Placebo
Drug
Lead sponsor
Addex Pharma S.A.
Industry
Eligibility
30 Years to 85 Years
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
41
States / cities
Phoenix, Arizona • Fresno, California • Irvine, California + 38 more
Source: ClinicalTrials.gov public record
Updated Aug 5, 2025 · Synced May 22, 2026, 5:33 AM EDT
Completed No phase listed Observational
View directory record Official record
Conditions
Parkinson Disease, Autonomic Nervous System Diseases, Pure Autonomic Failure
Interventions
6-[18F]Fluorodopamine, 6-[18F]Fluorodopa, 13N-Ammonia
Drug
Lead sponsor
National Institute of Neurological Disorders and Stroke (NINDS)
NIH
Eligibility
18 Years to 70 Years
Enrollment
89 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2023
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 18, 2025 · Synced May 22, 2026, 5:33 AM EDT
Completed Phase 2 Interventional
View directory record Official record
Conditions
Parkinson Disease
Interventions
JP 1730, IV Levodopa, IV Apomorphine
Drug
Lead sponsor
National Institute of Neurological Disorders and Stroke (NINDS)
NIH
Eligibility
Not listed
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2005
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 3, 2008 · Synced May 22, 2026, 5:33 AM EDT
Completed Phase 2 Interventional
View directory record Official record
Conditions
Parkinson's Disease
Interventions
AFQ056 with L-dopa, Placebo
Drug
Lead sponsor
Novartis
Industry
Eligibility
30 Years to 80 Years
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
4
States / cities
Sunnyvale, California • Englewood, Colorado • Indianapolis, Indiana + 1 more
Source: ClinicalTrials.gov public record
Updated Dec 22, 2020 · Synced May 22, 2026, 5:33 AM EDT
Completed Phase 1 Interventional
View directory record Official record
Conditions
Parkinson's Disease
Interventions
pramipexole
Drug
Lead sponsor
Oregon Health and Science University
Other
Eligibility
30 Years to 80 Years
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2007
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Apr 24, 2008 · Synced May 22, 2026, 5:33 AM EDT
Terminated Phase 2 Interventional Results available
View directory record Official record
Conditions
Parkinson Disease
Interventions
Pridopidine, Placebo
Drug
Lead sponsor
Prilenia
Industry
Eligibility
30 Years to 85 Years
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
33
States / cities
Birmingham, Alabama • Phoenix, Arizona • Scottsdale, Arizona + 27 more
Source: ClinicalTrials.gov public record
Updated Jun 30, 2022 · Synced May 22, 2026, 5:33 AM EDT
Terminated Phase 1Phase 2 Interventional Results available
View directory record Official record
Conditions
Parkinson Disease
Interventions
Ropinirole oral product, Ropinirole Implant
Drug
Lead sponsor
Titan Pharmaceuticals
Industry
Eligibility
30 Years to 80 Years
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
3
States / cities
Orlando, Florida • Farmington Hills, Michigan • Kirkland, Washington
Source: ClinicalTrials.gov public record
Updated May 5, 2023 · Synced May 22, 2026, 5:33 AM EDT
Terminated Phase 2Phase 3 Interventional
View directory record Official record
Conditions
Parkinson Disease, Dyskinesia, Drug-Induced, Dyskinesias
Interventions
Dipraglurant
Drug
Lead sponsor
Addex Pharma S.A.
Industry
Eligibility
30 Years to 85 Years
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
7
States / cities
Augusta, Georgia • Kansas City, Kansas • New Brunswick, New Jersey + 4 more
Source: ClinicalTrials.gov public record
Updated Aug 5, 2025 · Synced May 22, 2026, 5:33 AM EDT
Completed No phase listed Observational
View directory record Official record
Conditions
Parkinson's Disease
Interventions
Not listed
Lead sponsor
Oregon Health and Science University
Other
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Sep 29, 2016 · Synced May 22, 2026, 5:33 AM EDT
Completed Phase 2 Interventional Results available
View directory record Official record
Conditions
Parkinson's Disease
Interventions
IPX066, IR CD-LD
Drug
Lead sponsor
Impax Laboratories, LLC
Industry
Eligibility
30 Years and older
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
1
States / cities
Hayward, California
Source: ClinicalTrials.gov public record
Updated Nov 7, 2019 · Synced May 22, 2026, 5:33 AM EDT
Completed Phase 2 Interventional
View directory record Official record
Conditions
Dyskinesias, Parkinson Disease, Movement Disorders, Parkinsonian Disorders, Anti-Dyskinesia Agents
Interventions
AFQ056, Placebo
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
30 Years to 80 Years
Enrollment
154 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
5
States / cities
Sunnyvale, California • Englewood, Colorado • Tampa, Florida + 2 more
Source: ClinicalTrials.gov public record
Updated Dec 22, 2020 · Synced May 22, 2026, 5:33 AM EDT
Completed Phase 3 Interventional Results available
View directory record Official record
Conditions
Idiopathic Parkinson's Disease
Interventions
CVT-301
Drug
Lead sponsor
Acorda Therapeutics
Industry
Eligibility
30 Years to 86 Years
Enrollment
325 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
55
States / cities
Scottsdale, Arizona • Fresno, California • Fullerton, California + 47 more
Source: ClinicalTrials.gov public record
Updated Aug 13, 2019 · Synced May 22, 2026, 5:33 AM EDT
Completed Phase 3 Interventional Results available
View directory record Official record
Conditions
Idiopathic Parkinson's Disease
Interventions
CVT-301, Observational cohort
Drug · Other
Lead sponsor
Acorda Therapeutics
Industry
Eligibility
30 Years to 85 Years
Enrollment
408 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
14
States / cities
Scottsdale, Arizona • Fountain Valley, California • Panorama City, California + 10 more
Source: ClinicalTrials.gov public record
Updated May 27, 2019 · Synced May 22, 2026, 5:33 AM EDT
Active, not recruiting Phase 2 Interventional Results available
View directory record Official record
Conditions
Parkinson's Disease
Interventions
ND0612
Drug
Lead sponsor
NeuroDerm Ltd.
Industry
Eligibility
30 Years and older
Enrollment
214 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2027
U.S. locations
26
States / cities
Phoenix, Arizona • Little Rock, Arkansas • Fountain Valley, California + 23 more
Source: ClinicalTrials.gov public record
Updated May 29, 2025 · Synced May 22, 2026, 5:33 AM EDT
Completed Phase 1 Interventional
View directory record Official record
Conditions
Smoking
Interventions
CVT-301, Carbidopa
Drug
Lead sponsor
Acorda Therapeutics
Industry
Eligibility
25 Years to 65 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
2
States / cities
Daytona Beach, Florida • Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Jul 13, 2016 · Synced May 22, 2026, 5:33 AM EDT
Completed Phase 1 Interventional
View directory record Official record
Conditions
Parkinson's Disease
Interventions
Levodopa
Drug
Lead sponsor
Kevin J. Black, MD
Other
Eligibility
40 Years to 79 Years
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Oct 13, 2022 · Synced May 22, 2026, 5:33 AM EDT
Completed Phase 2 Interventional
View directory record Official record
Conditions
Dyskinesias, Parkinson Disease
Interventions
LY300164
Drug
Lead sponsor
National Institute of Neurological Disorders and Stroke (NINDS)
NIH
Eligibility
Not listed
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 3, 2008 · Synced May 22, 2026, 5:33 AM EDT
Terminated Phase 4 Interventional Results available
View directory record Official record
Conditions
Parkinson's Disease
Interventions
Carbidopa/levodopa/entacapone, Immediate release carbidopa/levodopa
Drug
Lead sponsor
Novartis
Industry
Eligibility
30 Years to 85 Years
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
21
States / cities
Phoenix, Arizona • Aliso Viejo, California • Irvine, California + 17 more
Source: ClinicalTrials.gov public record
Updated Feb 17, 2011 · Synced May 22, 2026, 5:33 AM EDT
Withdrawn Phase 4 Interventional
View directory record Official record
Conditions
Stroke
Interventions
Placebo, Levodopa / Carbidopa, Armeo
Drug · Device
Lead sponsor
Ross D. Zafonte, MD
Other
Eligibility
18 Years to 85 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
1
States / cities
Charlestown, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 26, 2021 · Synced May 22, 2026, 5:33 AM EDT
Completed Phase 3 Interventional
View directory record Official record
Conditions
Parkinson's Disease
Interventions
rasagiline mesylate
Drug
Lead sponsor
Teva Branded Pharmaceutical Products R&D, Inc.
Industry
Eligibility
30 Years and older
Enrollment
254 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2006
U.S. locations
6
States / cities
Fresno, California • Chicago, Illinois • Omaha, Nebraska + 3 more
Source: ClinicalTrials.gov public record
Updated Mar 8, 2010 · Synced May 22, 2026, 5:33 AM EDT