Medical Information Only. Always consult your healthcare provider before enrolling in any clinical trial.

NCT00134966 · ClinicalTrials.gov registry record · Phase 3

A Study to Evaluate Fixed Dose Carbidopa/Levodopa/Entacapone Versus Immediate Release Carbidopa/Levodopa

A Phase 3 study, sponsored by Novartis.

Completed
Registry status
Phase 3
Development phase
493
Enrollment target

NCT00134966: Completed Phase 3 study, sponsored by Novartis.

NCT00134966 is a Phase 3 study that has completed, run by Novartis. The registered enrollment target is 493 participants, below the 772-participant average among 15,282 other Phase 3 trials with a reported enrollment target (36% lower). According to ClinicalTrials.gov, the official US trial registry.

View on ClinicalTrials.gov ↗

View your shortlist →

The verdict

NCT00134966, a Phase 3 study, has completed, sponsored by Novartis.

COMPLETED
Registry status
Phase 3
Development phase
493 participants
Enrollment target

Study Summary

The purpose of this study is to achieve approval for the use of carbidopa/levodopa/entacapone in early Parkinson's disease (PD) by demonstrating that when used as initial levodopa therapy in early PD, carbidopa/levodopa/entacapone provides significantly greater symptomatic benefit than immediate release carbidopa/levodopa administered at the same levodopa dosage level of 100 mg three times a day (t.i.d.).

Interventions

  • DRUG capsules containing: carbidopa (25 mg), levodopa (100 mg), entacapone (200 mg)

Trial Details

FieldValue
Enrollment Target 493 participants
Start Date 2005-08
Est. Completion 2007-09
Phase Phase 3
Novartis

265 total trials

What the finished NCT00134966 record still lists

NCT00134966 is an interventional study that assigns participants to a tested intervention. The registered 493 participants enrollment target is mid-sized for trials with a published cap, below the 772-participant average among 15,282 other Phase 3 trials with a reported enrollment target (36% lower).

The record links to 0 conditions, and to 1 intervention - of which capsules containing: carbidopa (25 mg), levodopa (100 mg), entacapone (200 mg) is the first listed.

NCT00134966 does not publish any study locations in the registry export this page uses.

Frequently Asked Questions

What is clinical trial NCT00134966 about?

NCT00134966 is a clinical study titled "A Study to Evaluate Fixed Dose Carbidopa/Levodopa/Entacapone Versus Immediate Release Carbidopa/Levodopa". The purpose of this study is to achieve approval for the use of carbidopa/levodopa/entacapone in early Parkinson's disease (PD) by demonstrating that when used as initial levodopa therapy in early PD, carbidopa/levodopa/entacapone provides significantly greater symptomatic benefit than immediate rel...

What is the current status of trial NCT00134966?

This trial is currently completed. It is a Phase 3 study. The enrollment target is 493 participants. The study started on 2005-08. Estimated completion is 2007-09.

What interventions are being tested in trial NCT00134966?

The interventions under investigation include: capsules containing: carbidopa (25 mg), levodopa (100 mg), entacapone (200 mg) (DRUG).

Who is sponsoring clinical trial NCT00134966?

This trial is sponsored by Novartis, which has 265 total clinical trials registered on ClinicalTrials.gov.

How this trial's enrollment target compares

Where NCT00134966's enrollment target sits among peer trials

493 779th of 2000 higher than 1,221 of 2,000 other Phase 3 trials

participants (enrollment target), bucketed by value

Each bar is a band; taller bars hold more other Phase 3 trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.

Source ClinicalTrials.gov registry export · 2026-08-08

Nationwide trials with similar profiles

Cross-condition peers matched on enrollment target and registry start date, not the same-condition list above.

Similar enrollment target

  • NCT05861973 · 492 participants · NA

    SMARTer Weight Loss Management

  • NCT05908331 · 492 participants · NA

    MagicTouch for Treatment of In-Stent Restenosis in Coronary Artery Lesions

  • NCT06152575 · 492 participants · Phase 3

    MagnetisMM-32: A Study to Learn About the Study Medicine Called Elranatamab in People With Multiple Myeloma (MM) That Has Come Back After Taking Other Treatments (Including Prior Treatment With an Anti-CD38 Antibody and Lenalidomide)

  • NCT06953089 · 492 participants · Phase 2

    DB-1311 in Combination With BNT327 or DB-1305 in Advanced/Metastatic Solid Tumors

Similar registry start date

  • NCT05988463 · started 2027-01-01 · Phase 1

    Dose-Escalation Study of Artesunate Patients With IPF

  • NCT07219706 · started 2026-12-10 · NA

    Dietary Fiber and Time Restricted Eating

  • NCT02831335 · started 2026-12-01

    Technical Development of Multi-Parametric Renocerebral MRI

  • NCT05962346 · started 2026-12 · NA

    Fetal Endoscopic Tracheal Occlusion for Congenital Diaphragmatic Hernia

Source: ClinicalTrials.gov NCT00134966, the US trial registry maintained by the National Library of Medicine. NCT00134966 (mid enrollment · none site footprint · completed) retrieved and formatted by PlainTrial, see methodology.