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Found 239 studies with search of: L-Dopa OR Dihydroxyphenylalanine
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Rank Status Study
1 Completed An Open-Label Feasibility/Pilot Study With [123I]-IBZM SPECT (DOPA-SYN)
Condition: Parkinson's Disease
Interventions: Drug: carbidopa/l-dopa;   Drug: carbidopa/l-dopa/entacapone;   Drug: Stalevo;   Procedure: [123I]-IBZM imaging
2 Completed COMT Polymorphism and Entacapone Efficacy
Condition: Parkinson's Disease
Interventions: Drug: entacapone;   Drug: l dopa versus placebo
3 Not yet recruiting A Fixed Dose Study of Ropinirole Prolonged Release as Adjunctive Treatment in Patients With Advanced Parkinson's Disease
Condition: Parkinson Disease
Interventions: Drug: ropinirole/L-dopa;   Drug: placebo/L-dopa
4 Terminated Clinical Evaluation of 18F-DOPA Positron Emission Tomography in Medullary Thyroid Cancer
Conditions: Thyroid Neoplasm;   Thyroid Carcinoma;   Medullary Carcinoma
Intervention: Other: 18F-L-DOPA PET
5 Recruiting Evaluation of the Role of the Noradrenergic System in Pain Perception in Parkinson's Disease
Condition: Parkinson's Disease
Interventions: Drug: duloxetine;   Drug: placebo of duloxetine;   Drug: injection of apomorphine;   Drug: injection of placebo of apomorphine;   Drug: injection of L-Dopa;   Drug: injection of placebo of L-Dopa
6 Completed Dopaminergic Effects on Cortical Function in Tourette's (Levodopa Protocol)
Condition: Tourette Syndrome
Interventions: Drug: levodopa solution for i.v. administration;   Drug: placebo
7 Completed Efficacy and Safety of AFQ056 When Combined With Increased Doses of L-dopa in Parkinson's Disease Patients With Moderate-severe L-dopa Induced Dyskinesia
Condition: Parkinson's Disease
Interventions: Drug: AFQ056;   Drug: Placebo
8 Completed
Has Results 		REQUIP (Ropinirole Hydrochloride) IR Long-Term Phase 4 Study
Conditions: Parkinson Disease;   Parkinson's Disease
Interventions: Drug: ROP;   Drug: ROP+L-Dopa
9 Completed Efficacy and Safety of AFQ056 in Reducing L-dopa Induced Dyskinesias in Parkinson's Disease Patients, and Safety in Combination With L-dopa
Condition: Parkinson's Disease
Interventions: Drug: AFQ056;   Drug: Placebo
10 Recruiting A Trial of Levodopa in Angelman Syndrome
Condition: Angelman Syndrome
Intervention: Drug: Levodopa/carbidopa
11 Recruiting Trial of L-DOPA as a Treatment to Improve Vision in Albinism
Condition: Albinism
Intervention: Drug: Levodopa
12 Completed Study on Tolerability of Levodopa/Carbidopa in Children With Angelman Syndrome
Condition: Angelman Syndrome
Intervention: Drug: Levodopa/Carbidopa (4:1)
13 Recruiting Behavioral and Physiological Effects of Cocaine in Cocaine-dependent Participants Treated With Levodopa in Combination With Carbidopa and Entacapone (LCE)
Condition: Cocaine Abuse
Intervention: Drug: L-dopa / carbidopa / entacapone (LCE)
14 Completed Efficacy and Safety of AFQ056 in Reducing L-dopa Induced Dyskinesias in Parkinson's Disease Patients
Conditions: Parkinson's Disease;   L-dopa Induced Dyskinesia
Interventions: Drug: AFQ056;   Drug: Placebo
15 Recruiting Safety and Efficacy of AQW051 in L-dopa Induced Dyskinesias in Patients With Parkinson's Disease
Conditions: Dyskinesia,;   Drug-induced
Interventions: Drug: AQW051;   Drug: Placebo
16 Completed
Has Results 		Pilot Study to Evaluate Levodopa as Treatment for Residual Amblyopia
Condition: Amblyopia
Interventions: Drug: levodopa/carbidopa;   Device: patching
17 Completed
Has Results 		Efficacy and Safety of Carbidopa/Levodopa/Entacapone in Patients With Parkinson's Disease Requiring Initiation of Levodopa Therapy
Condition: Parkinson's Disease
Interventions: Drug: Carbidopa/levodopa/entacapone;   Drug: Immediate release carbidopa/levodopa
18 Completed Efficacy, Safety, and Pharmacokinetics/Pharmacodynamic Study of L-Dopa/Carbidopa To Treat Parkinson's Disease
Condition: Parkinson's Disease
Intervention: Drug: levodopa-carbidopa
19 Completed Study of Efficacy, Safety and Tolerability of Levodopa-Carbidopa Intestinal Gel in Levodopa-Responsive Parkinson's Subjects
Condition: Advanced Parkinson's Disease
Interventions: Drug: levodopa-carbidopa intestinal gel active and placebo capsules;   Drug: levodopa-carbidopa capsules active and placebo gel;   Device: CADD-Legacy® 1400 ambulatory infusion pump
20 Completed Study of Efficacy, Safety and Tolerability of Levodopa-Carbidopa Intestinal Gel in Levodopa-Responsive Parkinson's Subjects
Condition: Advanced Parkinson's Disease
Interventions: Drug: levodopa-carbidopa intestinal gel active and placebo capsules;   Drug: levodopa-carbidopa capsules active and placebo gel;   Device: CADD-Legacy® 1400 ambulatory infusion pump

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