TheraRadar
Data updated: May 26, 2026

ENTACAPONE

Catechol O-Methyltransferase Inhibitors
CNS Approved 2012-07-16

Entacapone is a catechol-O-methyltransferase (COMT) inhibitor indicated for use as an adjunct to levodopa and carbidopa therapy. It is specifically used to treat patients with Parkinson’s disease who experience end-of-dose "wearing-off" symptoms. The drug's therapeutic role is to enhance the effects of levodopa by maintaining more consistent levels of the medication in the body. Its effectiveness has not been established in Parkinson's patients who do not experience these "wearing-off" periods.

Source: FDA Label • PHARMOBEDIENT • Catechol-O-Methyltransferase Inhibitor

How ENTACAPONE Works

Entacapone works by selectively and reversibly inhibiting the enzyme catechol-O-methyltransferase (COMT), which is a major metabolizing enzyme for levodopa. When administered alongside levodopa and a decarboxylase inhibitor like carbidopa, entacapone prevents the peripheral breakdown of levodopa. This results in higher and more sustained plasma levels of levodopa, allowing for more constant dopaminergic stimulation in the brain. This process helps to manage the signs and symptoms of Parkinson’s disease more effectively than levodopa and carbidopa alone.

Source: FDA Label
8
Indications
--
Phase 3 Trials
13
Years on Market

Details

Status
Discontinued
First Approved
2012-07-16
Routes
ORAL
Dosage Forms
TABLET

ENTACAPONE Approval History

2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
Original
New Indication
New Form
Label Update
11 FDA actions from 2012 to 2022
Jan 2022 ORIGINAL
Update
Mar 2020 SUPPL
Label · Labeling
Oct 2018 ORIGINAL
Update

What ENTACAPONE Treats

1 indications

ENTACAPONE is approved for 1 conditions since its original approval in 2012. These indications span multiple therapeutic areas including oncology, immunology, and more.

  • End-of-dose "wearing-off" in patients with Parkinson's disease
Source: FDA Label

ENTACAPONE Competitive Set

Pro

Three rings of competition based on shared molecular targets and treated indications.

Unlock 8 more competitors across all three rings.
Upgrade to Pro

Filters applied: drops same-active-ingredient (505(b)(2) reformulations), route-mismatch (topical vs systemic), and cross-therapeutic-area matches in same-indication rings.

📋

Clinical Trial Registry

7 trials
Trial Sponsor ID Phase Status Title
NCT02096601 ND0612/004 Ph 1 completed A Safety, Tolerability, and Pharmacokinetic Study of ND0612 Delivered as a Continuous Subcutaneous in Parkinson's Disease Patients
NCT02170376 results posted BIA-91067-124 Ph 1 completed The Effect of BIA 9-1067 at Steady-state on the Levodopa Pharmacokinetics
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
NCT01519284 results posted BIA-91067-114 Ph 1 completed Study of BIA 9-1067 to Investigate Its Effect on Levodopa Pharmacokinetic
NCT01840423 NOCIFIM 3112001 Ph 1 completed Safety, Tolerability, Pharmacokinetics and Pharmacodynamics of ODM-104 in Healthy Volunteers
NCT01688089 NOCOS 3109001 Ph 1 completed Safety, Tolerability, Pharmacokinetics and Pharmacodynamics of ODM-103 in Healthy Volunteers
NCT00906828 DuoCOMT DuoCOMT Ph 4 completed Pharmacokinetics of Levodopa/Carbidopa Infusion With and Without Oral Catechol-O-methyl Transferase (COMT) Inhibitors
🔬

Active Pipeline

Pro

Ongoing clinical trials by development phase

Loading...

Key Completed Trials

Pro

Completed studies with published results, ranked by significance

Loading...
📊

Trial Timeline

Full development history with FDA approval milestones

|
Loading...
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.

ENTACAPONE FDA Label Details

Indications & Usage

ENTACAPONE is indicated for the treatment of End-of-dose "wearing-off" in patients with Parkinson's disease.

Looking for the branded version?

COMTAN

Full clinical data, patents, trials, and competitive landscape for entacapone.

See COMTAN

Data Sources

Data sourced from official FDA and NIH databases. Click links to verify on original sources.