TheraRadar
Data updated: Mar 29, 2026

ENTACAPONE

ENTACAPONE Catechol O-Methyltransferase Inhibitors
Neurology 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 • Sun Pharma • 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
Prescription
First Approved
2012-07-16
Routes
ORAL
Dosage Forms
TABLET

ENTACAPONE Approval History

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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
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Active Pipeline

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Ongoing clinical trials by development phase

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Key Completed Trials

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Completed studies with published results, ranked by significance

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Trial Timeline

Full development history with FDA approval milestones

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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

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Indications & Usage

Entacapone tablets USP are indicated as an adjunct to levodopa and carbidopa to treat end-of-dose "wearing-off" in patients with Parkinson's disease (see CLINICAL PHARMACOLOGY, Clinical Studies ). Entacapone's effectiveness has not been systematically evaluated in patients with Parkinson's disease who do not experience end-of-dose "wearing-off".

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Data Sources

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