Levodopa: all 105 studies that test it
Page 1 of 2. Open to participants first (6), then studies with results posted, then the rest; newest registration first within each.
- Gastrointestinal Dopamine Decarboxylase and Levodopa PharmacokineticsNot yet recruitingNCT07793461Phase 4
- Study of L-dopa Treatment in Patients With a Neurodevelopmental Disorder (CTNNB1 Gene)RecruitingNCT07614126Not applicable
- Basic and Clinical Studies of Levodopa/Carbidopa/Entacapone in the Treatment of Early Parkinson's DiseaseRecruitingNCT06236230Phase 4
- Cortical Electrophysiology of Response Inhibition in Parkinson's DiseaseRecruitingNCT06234995Phase 4
- Dopamine Modulation of Motivation and Motor Function in Major Depression & InflammationRecruitingNCT05909267Not applicable
- Improving Therapeutic Learning for PTSDRecruitingNCT04558112Phase 2
- L-DOPA vs. Placebo for Depression and Psychomotor Slowing in Older AdultsTerminatedNCT03761030Phase 4Results posted
- Therapeutic Potential for Intranasal Levodopa in Parkinson's Disease -Off ReversalCompletedNCT03541356Phase 2Results posted
- A Study of L-DOPA for Depression and Slowing in Older AdultsCompletedNCT02744391Phase 4Results posted
- Dopamine Enhancement of Fear Extinction Learning in PTSD (1R21MH108753)CompletedNCT02560389Phase 4Results posted
- Inflammation-related Alterations in Neurocircuitry: Reversal With LevodopaCompletedNCT02513485Phase 4Results posted
- Randomized Safety Study of CVT-301 Compared to an Observational Control GroupCompletedNCT02352363Phase 3Results posted
- Twelve Month Safety and Efficacy Study of CVT-301 In Parkinson's Disease Patients With OFF EpisodesCompletedNCT02242487Phase 3Results posted
- Efficacy and Safety Study of CVT-301 In Parkinson's Disease Patients With OFF EpisodesCompletedNCT02240030Phase 3Results posted
- A Study to Assess the Efficacy, Safety and Tolerability of ABT-SLV187 Monotherapy in Subjects With Advanced Parkinson's Disease (PD) and Persistent Motor Complications, Despite Optimized Treatment With Available Anti-Parkinsonian MedicationsCompletedNCT01960842Phase 3Results posted
- Apokyn for Motor IMProvement of Morning AKinesia Trial (AM IMPAKT)CompletedNCT01770145Phase 4Results posted
- A Study to Assess the Safety and Efficacy of Levodopa-carbidopa Intestinal Gel (LCIG) for the Treatment of Non-motor Symptoms in Patients With Advanced Parkinson's DiseaseCompletedNCT01736176Phase 3Results posted
- Vision Response to Dopamine ReplacementTerminatedNCT01663935Phase 2Results posted
- A Study to Investigate the Tolerability and Effect of Three Single-dose Regimens of BIA 9-1067CompletedNCT01568034Phase 2Results posted
- Effect of BIA 9-1067 at Steady-state on the Pharmacokinetics of Levodopa/Carbidopa and Levodopa/BenserazideCompletedNCT01533116Phase 1Results posted
- Study of BIA 9-1067 to Investigate Its Effect on Levodopa PharmacokineticCompletedNCT01519284Phase 1Results posted
- A Fixed Dose Study of Ropinirole Prolonged Release as Adjunctive Treatment in Patients With Advanced Parkinson's DiseaseCompletedNCT01494532Phase 4Results posted
- Augmenting Language Therapy for Aphasia: LevodopaCompletedNCT01429077Phase 2/3Results posted
- Cognitive Remediation for Cocaine DependenceCompletedNCT01393457Phase 2Results posted
- A Trial of Levodopa in Angelman SyndromeCompletedNCT01281475Phase 2/3Results posted
- Levodopa for the Treatment of Residual AmblyopiaCompletedNCT01190813Phase 3Results posted
- Trial of L-DOPA as a Treatment to Improve Vision in AlbinismCompletedNCT01176435Phase 2Results posted
- A Study to Compare IPX066 and Carbidopa/Levodopa/Entacapone (CLE) Followed by an Open-Label Safety Study of IPX066CompletedNCT01130493Phase 3Results posted
- Acute Effects of Preladenant (SCH 420814) on Dyskinesia and Parkinsonism in Levodopa Treated Participants (P05550)CompletedNCT00845000Phase 1Results posted
- Study on Tolerability of Levodopa/Carbidopa in Children With Angelman SyndromeCompletedNCT00829439Phase 1Results posted
- Pilot Study to Evaluate Levodopa as Treatment for Residual AmblyopiaCompletedNCT00789672Phase 2Results posted
- Carbidopa/Levodopa Combined With Behavioral Therapy for the Treatment of Cocaine DependenceCompletedNCT00713583Phase 2Results posted
- Carbidopa/Levodopa/Entacapone Versus Immediate Release (IR) Carbidopa/Levodopa on Non-motor Symptoms in Patients With Idiopathic Parkinson's Disease and Demonstrating Non-motor Symptoms of Wearing OffTerminatedNCT00642356Phase 4Results posted
- Efficacy of Levodopa/Carbidopa/Entacapone vs Levodopa/Carbidopa in Parkinson's Disease Patients With Early Wearing-offCompletedNCT00391898Phase 4Results posted
- Safety/Efficacy Study of Levodopa-Carbidopa Intestinal Gel in Parkinson's SubjectsCompletedNCT00360568Phase 3Results posted
- Levodopa-Carbidopa Intestinal Gel Open-Label Study in Advanced Parkinson's DiseaseCompletedNCT00335153Phase 3Results posted
- Effects of Carbidopa/Levodopa/Entacapone on Motor Function and Quality of Life in Patients With Parkinson's DiseaseCompletedNCT00219284Phase 4Results posted
- Medications for Stopping Cocaine Dependence and Preventing RelapseCompletedNCT00218023Phase 2Results posted
- Efficacy and Safety of Carbidopa/Levodopa/Entacapone in Patients With Parkinson's Disease Requiring Initiation of Levodopa TherapyCompletedNCT00099268Phase 3Results posted
- Levodopa for Diabetic RetinopathyCompletedNCT07444892Phase 2
- Behavioural Profiling of Disease-related Cognitive and Motor Impairment in PDCompletedNCT06275633Not applicable
- The Correlation of Reduction of Levodopa and Non-motor Symptoms of Parkinson's Disease After Deep Brain StimulationCompletedNCT05901350Not applicable
- Bioavailability of Levodopa 250 mg and Carbidopa 25 mg With Regards to Reference ProductCompletedNCT05250141Phase 1
- eArly levoDopa With Opicapone in Parkinson's paTients wIth motOr fluctuatioNs.CompletedNCT04990284Phase 4
- Dopaminergic Dysfunction in Late-Life DepressionCompletedNCT04469959Phase 2
- Changes in Glutamatergic Neurotransmission of Severe TBI PatientsSuspendedNCT04244058Early Phase 1
- Transition From Acute to Chronic Back Pain : Effect of L-dopa,Gender,and Associated Brain PlasticityWithdrawnNCT04082715Phase 2
- Acute Effects of Pharmacological Neuromodulation on Leg Motor Activity in Patients With SCI Treated With EESCompletedNCT04052776Phase 1
- Effects of 5HTP and LDOPA on CNS Excitability After SCISuspendedNCT04000919Phase 2/3
- Oxytocin and Dopamine's Effect on Vicarious OptimismCompletedNCT03891095Not applicable
- Pharmacokinetic Study of CVT-301 (Levodopa Inhalation Powder)CompletedNCT03887884Phase 1
- Pharmacological Modulation of Belief SalienceCompletedNCT03754062Phase 1
- Exceptional Experiences (EE), Salience & Dopaminergic NeurotransmissionCompletedNCT03333369Early Phase 1
- Clinical Trial of Levodopa/Carbidopa ( Sinemet) Therapy in Angel Man SyndromeCompletedNCT03235037Not applicable
- Measuring Parkinson's Disease ProgressionCompletedNCT03205956Phase 1
- Safety and Efficacy Study of Human ESC-derived Neural Precursor Cells in the Treatment of Parkinson's DiseaseStatus unknownNCT03119636Phase 1/2
- Studying a Potential Protective Effect of L-Dopa on Retinitis PigmentosaStatus unknownNCT02837640Phase 2
- A Study to Compare Two Dose Strengths of CVT-301 (Levodopa Inhalation Powder) With an Oral Dose of Sinemet® (Carbidopa-levodopa) TabletsCompletedNCT02812394Phase 1
- A Study of the Safety and Tolerability of a Single Dose Administration of CVT-301 (Levodopa Inhalation Powder)CompletedNCT02807675Phase 1
- Pharmacokinetic-pharmacodynamic Interaction Between BIA 3-202 and Levodopa/BenserazideCompletedNCT02778594Phase 1
- Efficacy Phase IIa Study of CVXL-0107 in Advanced Parkinson's DiseaseCompletedNCT02641054Phase 2
- A Study of the Safety and Levodopa Pharmacokinetics Following Single Dose Administration of CVT 301 (Levodopa Inhalation Powder) in Smoking and Non-Smoking AdultsCompletedNCT02633839Phase 1
- A Study of the Safety and Pharmacokinetics of Levodopa Following Administration of CVT 301 (Levodopa Inhalation Powder) in Adults With AsthmaCompletedNCT02633007Phase 1
- L-dopa Versus Dopamine Agonists After Subthalamic Nucleus Deep Brain Stimulation in Parkinson's DiseaseStatus unknownNCT02347059Phase 2
- Combining Robotic-Assisted Therapy and Pharmacotherapy in Post-Stroke RehabilitationWithdrawnNCT02346630Phase 4
- Targeting Dopamine Therapy in RLSStatus unknownNCT01937169Not applicable
- Efficacy and Safety Study of Inhaled CVT 301 in Parkinson's Disease Patients for Treatment of OFF EpisodesCompletedNCT01777555Phase 2
- Remission of ICD by Switching Dopamine Agonist to Levodopa/CarbidopaCompletedNCT01683253Phase 4
- Antipsychotic Augmentation With L-DopaCompletedNCT01636037Phase 2
- Safety, Pharmacokinetics and Efficacy Study of CVT-301 Inpatients With Parkinson's Disease and "Off" EpisodesCompletedNCT01617135Phase 2
- A Pharmacokinetic Study of Levodopa and Carbidopa Intestinal Gel in Subjects With Advanced Parkinson's DiseaseCompletedNCT01484990Phase 1
- Behavioral and Physiological Effects of Cocaine in Cocaine-dependent Participants Treated With Levodopa in Combination With Carbidopa and Entacapone (LCE)CompletedNCT01437293Phase 1
- Dopamine Treatment in Children With Cerebral Palsy With Dystonia- A Double Blind Controlled StudyStatus unknownNCT01361373Phase 4
- Fasting Comparative Bioavailability of Two Tablet Formulations of Levodopa /Benserazide in Healthy VolunteersCompletedNCT01327261Phase 4
- Dopaminergic Modulation of Cognition and Psychomotor FunctionCompletedNCT01218425Not applicable
- Efficacy and Safety of AFQ056 When Combined With Increased Doses of L-dopa in Parkinson's Disease Patients With Moderate-severe L-dopa Induced DyskinesiaCompletedNCT01092065Phase 2
- Motor Activation in Multiple System Atrophy and Parkinson Disease: a Positron Emission Tomography (PET) StudyCompletedNCT01044992Not applicable
- A Study to Assess the Effect of Safinamide on Levodopa PharmacokineticsCompletedNCT01026428Phase 1/2
- Effect of Dopaminergic Medication on Recovery of AphasiaCompletedNCT00941265Not applicable
- Duodenal Levodopa Infusion, Quality of Life and Autonomic Nervous System in Parkinson's DiseaseCompletedNCT00914134Phase 4
- Pharmacokinetics of Levodopa/Carbidopa Infusion With and Without Oral Catechol-O-methyl Transferase (COMT) InhibitorsCompletedNCT00906828Phase 4
- Different Dyskinesias in Parkinson's Disease and Their Relation to Levodopa PharmacokineticsCompletedNCT00888186Phase 4
- Effect of Levodopa on Human Multifocal ElectroretinogramCompletedNCT00812760Phase 4
- Pharmacokinetic Study With Repeated Doses of StalevoCompletedNCT00693862Phase 1
- Dopaminergic Effects on Cortical Function in Tourette's (Levodopa Protocol)CompletedNCT00634556Phase 1
- A Study to Determine the Efficacy and Safety of Cabergoline for the Treatment of Patients With RLSCompletedNCT00625547Phase 3
- Carbidopa/Levodopa Versus Carbidopa/Levodopa/Entacapone on Markers of Event Related Potentials (ERPs) in Patients With Idiopathic Parkinson's Disease (PD) and End-of-dose Wearing OffWithdrawnNCT00601978Phase 4
- Efficacy, Safety, and Pharmacokinetics/Pharmacodynamic Study of L-Dopa/Carbidopa To Treat Parkinson's DiseaseCompletedNCT00558337Phase 2
- PK, PD and Safety of Multiple Doses of V1512 Tablets in PD Patients Compared to Standard Levodopa/Carbidopa Oral TabletsCompletedNCT00491998Phase 1/2
- Effect of Levodopa-Carbidopa on Visual Function in Patients With Recent-Onset Nonarteritic Anterior Ischemic Optic NeuropathyCompletedNCT00432393Phase 4
- SLV308 for Treatment of Patients With Parkinson's Disease Experiencing Motor FluctuationsCompletedNCT00406588Phase 3
- A Non-Blinded Study Demonstrating the Effectiveness and Safety of Azilect Alone or in Combination Therapy in Parkinson's DiseaseCompletedNCT00399477Phase 4
- Dopaminergic Enhancement of Learning and Memory in Healthy Adults and Patients With Dementia/Mild Cognitive ImpairmentStatus unknownNCT00306124Phase 4
- Behavioral Therapy Combined With Carbidopa/Levodopa for the Treatment of Cocaine DependenceCompletedNCT00218075Phase 2
- An Open-Label Feasibility/Pilot Study With [123I]-IBZM SPECT (DOPA-SYN)CompletedNCT00200447Phase 2
- Dopamine Turnover Rate as Surrogate Parameter for Diagnosis of Early Parkinson's DiseaseCompletedNCT00153972Phase 4
- Study to Compare the Effect of Treatment With Carbidopa/Levodopa/Entacapone on the Quality of Life of Patients With Parkinson's Disease. This Study is Not Recruiting in the United StatesCompletedNCT00143026Phase 4
- A Study to Evaluate Fixed Dose Carbidopa/Levodopa/Entacapone Versus Immediate Release Carbidopa/LevodopaCompletedNCT00134966Phase 3
- Dopaminergic Enhancement of Learning and Memory in Healthy Adults and Patients With DyslexiaStatus unknownNCT00111371Phase 4
- Improved Language Acquisition With LevodopaCompletedNCT00103805Phase 4