LODOSYN (carbidopa)
Lodosyn (carbidopa) is indicated for use in combination with levodopa or carbidopa-levodopa to treat symptoms of idiopathic Parkinson’s disease, postencephalitic parkinsonism, and symptomatic parkinsonism (such as that following carbon monoxide or manganese intoxication). It is specifically utilized for patients whose current carbidopa-levodopa regimen provides an inadequate daily dose of carbidopa (usually less than 70 mg) or for those requiring individualized titration of each medication. The addition of Lodosyn permits lower levodopa dosing, which reduces peripheral side effects like nausea and vomiting and may provide a smoother therapeutic response. However, it has not been shown to benefit patients with markedly irregular (“on-off”) responses to levodopa.
How LODOSYN Works
Parkinson’s disease symptoms are associated with dopamine depletion in the corpus stri
Details
- Status
- Prescription
- First Approved
- 1977-04-25
- Routes
- ORAL
- Dosage Forms
- TABLET
LODOSYN Approval History
What LODOSYN Treats
2 indicationsLODOSYN is approved for 2 conditions since its original approval in 1977. These indications span multiple therapeutic areas including oncology, immunology, and more.
- Parkinson's Disease
- Parkinsonism
LODOSYN Competitive Set
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Indication competitors
Same indication, different mechanism — what else might this patient receive?
Filters applied: drops same-active-ingredient (505(b)(2) reformulations), route-mismatch (topical vs systemic), and cross-therapeutic-area matches in same-indication rings.
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Clinical Trial Registry
18 trials| Trial | Sponsor ID | Phase | Status | Title |
|---|---|---|---|---|
| NCT04520178 5-HTP only | Pro00119483/00125176 | Ph 2, Ph 3 | recruiting | Effects of 5HTP on the Injured Human Spinal Cord |
| NCT04325503 RES results posted | HUM00156490 5U01AG061393-05 | Ph 1, Ph 2 | completed | Neurobiological Drivers of Mobility Resilience: The Dopaminergic System |
| NCT01323374 FMS201 | Droxidopa FMS201 | Ph 2 | completed | Study To Assess The Clinical Benefit Of Droxidopa And Droxidopa/Carbidopa In Subjects With Fibromyalgia |
| NCT04000919 | 18.1268 | Ph 2, Ph 3 | suspended | Effects of 5HTP and LDOPA on CNS Excitability After SCI |
| NCT00685919 results posted | 101499 HL071784-05A1 | Ph 2, Ph 3 | completed | Peripheral Dopamine in Postural Tachycardia Syndrome |
| NCT04764383 | 20201550 | Ph 2 | withdrawn | Histaminergic Basis of Fatigue in Multiple Sclerosis |
| NCT03055936 COMDOS1 results posted | 3112005 | Ph 1 | completed | Dose-finding Pharmacokinetic Study in Healthy Males |
| NCT03266965 | 20161186 W81XWH-16-1-0462 | Ph 1 | completed | Histaminergic Basis of Central Fatigue in Multiple Sclerosis - A Novel Approach |
| NCT03115827 results posted | VUMC54580 | Ph 4 | completed | Norepinephrine-targeted Therapy for Action Control in Parkinson Disease |
| NCT01399905 results posted | IRB00004133 | Ph 2 | completed | High and Low Dose Carbidopa Treatment of Parkinson's Disease |
| NCT00845000 results posted | P05550 MK-3814-023 | Ph 1 | completed | Acute Effects of Preladenant (SCH 420814) on Dyskinesia and Parkinsonism in Levodopa Treated Participants (P05550) |
| NCT02633839 | CVT-301-007 | Ph 1 | completed | A Study of the Safety and Levodopa Pharmacokinetics Following Single Dose Administration of CVT 301 (Levodopa Inhalation Powder) in Smoking and Non-Smoking Adults |
| NCT02633007 | CVT-301-008 | Ph 1 | completed | A Study of the Safety and Pharmacokinetics of Levodopa Following Administration of CVT 301 (Levodopa Inhalation Powder) in Adults With Asthma |
| NCT01212484 results posted | 09-0011 | Ph 3 | completed | Carbidopa for the Treatment of Nausea and Vomiting in Familial Dysautonomia |
| NCT01227655 BIPARKII results posted | BIA-91067-302 2010-022366-27, BIA-91067-302 | Ph 3 | completed | Efficacy and Safety of BIA 9-1067 in Idiopathic Parkinson's Disease Patients. |
| NCT01568073 results posted | BIA-91067-301 2010-021860-13 | Ph 3 | completed | Efficacy and Safety of BIA 9-1067 in Idiopathic Parkinson's Disease Patients With "Wearing-off" Phenomenon |
| NCT01229332 | ND0611/002 | Ph 1, Ph 2 | completed | A Safety, Tolerability and Pharmacokinetic Study of ND0611 on the Top of Different Oral Dosage Forms of Levodopa/Carbidopa in Parkinson's Disease Patients |
| NCT01296464 PARTEST | 2939136 | Ph 2 | completed | Comparing Different Levodopa/Carbidopa/Entacapone Treatment Regimens |
Active Pipeline
Ongoing clinical trials by development phase
Key Completed Trials
Completed studies with published results, ranked by significance
Trial Timeline
Full development history with FDA approval milestones
Understanding FDA Approval Types
| Count | Type | What it means |
|---|---|---|
| - | ORIG | Original approval - drug first enters market |
| - | SUPPL - Efficacy | New indication (new disease/condition approved) |
| - | SUPPL - Labeling | Label text changes (warnings, dosing updates) |
| - | SUPPL - Manufacturing | Production changes (new facility) |
| - | SUPPL - Chemistry | Formulation changes (new dosage strength) |
Green lines in the timeline show ORIG and Efficacy approvals - the clinically meaningful milestones.
LODOSYN FDA Label Details
Indications & Usage
FDA Label (PDF)LODOSYN is indicated for the treatment of Parkinson's Disease; Parkinsonism.
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Data Sources
Data sourced from official FDA and NIH databases. Click links to verify on original sources.