- Conditions
- Spinal Cord Injuries
- Interventions
- 5-Hydroxytryptophan 100 MG, 5-Hydroxytryptophan, Carbidopa, Placebo
- Drug
- Lead sponsor
- University of Alberta
- Other
- Eligibility
- 18 Years to 65 Years
- Enrollment
- 6 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2020 – 2026
- U.S. locations
- 1
- States / cities
- Louisville, Kentucky
Search Results
Search by objective public record fields.
Search by query text, NCT ID, condition, intervention, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, or age. Results come from ClinicalTrials.gov. When the live registry is unavailable, a clearly labeled stored copy may be shown.
These results were retrieved from the live ClinicalTrials.gov registry. Filters and sort order apply to this result list.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Showing 25–37
of 37
matching trials from the live ClinicalTrials.gov search.
- Conditions
- Parkinson's Disease
- Interventions
- Sinemet 25-100 Oral Tablet, XP21279, Carbidopa Pill
- Drug
- Lead sponsor
- XenoPort, Inc.
- Industry
- Eligibility
- 30 Years to 75 Years
- Enrollment
- 14 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2009 – 2010
- U.S. locations
- 2
- States / cities
- Peoria, Arizona • Bingham Farms, Michigan
- 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
- Conditions
- Parkinsonian Signs in Older Persons
- Interventions
- carbidopa
- Drug
- Lead sponsor
- University of Michigan
- Other
- Eligibility
- 60 Years and older
- Enrollment
- 14 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2021 – 2022
- U.S. locations
- 1
- States / cities
- Ann Arbor, Michigan
- Conditions
- Parkinson Disease
- Interventions
- carbidopa/levodopa, as prescribed by treating physician
- Drug
- Lead sponsor
- University of Michigan
- Other
- Eligibility
- 45 Years to 90 Years
- Enrollment
- 19 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2020 – 2024
- U.S. locations
- 1
- States / cities
- Ann Arbor, Michigan
- Conditions
- Hypertension
- Interventions
- methyldopa vs. clonidine, clonidine patch
- Drug
- Lead sponsor
- Afshan B. Hameed, M.D.
- Other
- Eligibility
- 18 Years to 45 Years · Female only
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2004 – 2008
- U.S. locations
- 1
- States / cities
- Long Beach, California
- Conditions
- Parkinson's Disease
- Interventions
- carbidopa
- Drug
- Lead sponsor
- Oregon Health and Science University
- Other
- Eligibility
- 35 Years to 85 Years
- Enrollment
- 14 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2009 – 2011
- U.S. locations
- 1
- States / cities
- Portland, Oregon
- Conditions
- Postural Tachycardia Syndrome, Orthostatic Intolerance
- Interventions
- Carbidopa, Placebo
- Drug
- Lead sponsor
- Vanderbilt University
- Other
- Eligibility
- 18 Years to 60 Years
- Enrollment
- 32 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2008 – 2021
- U.S. locations
- 1
- States / cities
- Nashville, Tennessee
- Conditions
- Cocaine Abuse, Cocaine-Related Disorders
- Interventions
- Levodopa, Carbidopa, Clinical Management, Relapse Prevention Therapy, Contingency Management
- Drug · Behavioral
- Lead sponsor
- The University of Texas Health Science Center, Houston
- Other
- Eligibility
- 18 Years to 55 Years
- Enrollment
- 200 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2000 – 2007
- U.S. locations
- 1
- States / cities
- Houston, Texas
- Conditions
- Cardiac Repolarization in Healthy Subjects
- Interventions
- Carbidopa capsule, Moxifloxacin Tablets, USP, Placebo
- Drug
- Lead sponsor
- Impax Laboratories, LLC
- Industry
- Eligibility
- 18 Years to 55 Years
- Enrollment
- 35 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2023
- U.S. locations
- 1
- States / cities
- Dilworth, Minnesota
- Conditions
- Parkinsonian Signs in Older Persons
- Interventions
- Carbidopa 25 mg, Carbidopa-Levodopa 25/100 mg, Placebo 1, Placebo 2
- Drug
- Lead sponsor
- University of Michigan
- Other
- Eligibility
- 60 Years and older
- Enrollment
- 13 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2024
- U.S. locations
- 2
- States / cities
- Ann Arbor, Michigan
- Conditions
- Parkinson Disease
- Interventions
- Droxidopa, Carbidopa
- Drug
- Lead sponsor
- Vanderbilt University Medical Center
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 15 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2017 – 2018
- U.S. locations
- 1
- States / cities
- Nashville, Tennessee
- Conditions
- Hypertension
- Interventions
- Clonidine, Nitroglycerin transdermal, Dipyridamole/ Aspirin (Aggrenox), Desmopressin (DDAVP), Sildenafil, Nifedipine, Hydralazine, Hydrochlorothiazide, Placebo, Bosentan, Diltiazem, Eplerenone, guanfacine, L-arginine, captopril, carbidopa, losartan, metoprolol tartrate, nebivolol hydrochloride, prazosin hydrochloride, tamsulosin hydrochloride, Head-up tilt., aliskiren, Local heat stress
- Drug · Dietary Supplement · Other
- Lead sponsor
- Vanderbilt University
- Other
- Eligibility
- 18 Years to 80 Years
- Enrollment
- 152 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2001 – 2017
- U.S. locations
- 1
- States / cities
- Nashville, Tennessee