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Comtan (Entacapone) - Summary

 
 



COMTAN SUMMARY

Comtan® (entacapone) is available as tablets containing 200-mg entacapone.

Comtan (entacapone) is indicated as an adjunct to levodopa/carbidopa to treat patients with idiopathic Parkinson's Disease who experience the signs and symptoms of end-of-dose "wearing-off" (see CLINICAL PHARMACOLOGY, Clinical Studies).

Comtan's effectiveness has not been systematically evaluated in patients with idiopathic Parkinson's Disease who do not experience end-of-dose "wearing-off".


See all Comtan indications & dosage >>

NEWS HIGHLIGHTS

Media Articles Related to Comtan (Entacapone)

Parkinson's Disease
Source: MedicineNet amantadine Specialty [2013.12.04]
Title: Parkinson's Disease
Category: Diseases and Conditions
Created: 12/31/1997 12:00:00 AM
Last Editorial Review: 12/4/2013 12:00:00 AM

Parkinson's Disease Quiz: Test Your Medical IQ
Source: MedicineNet levodopa-carbidopa Specialty [2011.08.31]
Title: Parkinson's Disease Quiz: Test Your Medical IQ
Category: MedicineNet Quiz
Created: 8/23/2011 12:53:00 PM
Last Editorial Review: 8/31/2011 2:27:29 PM

Ease of Quitting Smoking May Be Early Sign of Parkinson's
Source: Medscape NeurologyHeadlines [2014.09.26]
People who reported they had a very easy time when they decided to stop smoking cigarettes were significantly more likely to develop Parkinson's disease than people who struggled to quit.
Medscape Medical News

Discovery of navigation system used by cancer, nerve cells
Source: Muscular Dystrophy / ALS News From Medical News Today [2014.08.27]
Duke University researchers have found a "roving detection system" on the surface of cells that may point to new ways of treating diseases like cancer, Parkinson's disease and amyotrophic lateral...

Human neurodegenerative diseases may be impacted by discovery of a new cellular garbage control pathway
Source: Huntingtons Disease News From Medical News Today [2014.07.22]
Several human neurodegenerative diseases, including Alzheimer's disease, Parkinson's disease and Huntington's disease but also ageing, are linked to an accumulation of abnormal and aggregated...

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Published Studies Related to Comtan (Entacapone)

The COMT Val158Met polymorphism affects the response to entacapone in Parkinson's disease: a randomized crossover clinical trial. [2011.01]
OBJECTIVE: In Parkinson disease (PD), the selective C-O-methyltransferase (COMT) inhibitor entacapone prolongs the effect of levodopa on motor symptoms (ON time) by increasing its bioavailability. The COMT Val158Met polymorphism is equally distributed in PD patients and modulates COMT activity, which can be high (Val/Val, COMT(HH) ), intermediate (Val/Met, COMT(HL) ), or low (Met/Met, COMT(LL) ). The objective of this study was to determine the response to entacapone in COMT(HH) and COMT(LL) PD patients... INTERPRETATION: The COMT(HH) genotype in PD patients enhances the effect of entacapone on the pharmacodynamics and pharmacokinetics of levodopa. The response to entacapone after repeated administrations and in heterozygous patients remains to be determined. Copyright (c) 2010 American Neurological Association.

Effects of carbidopa and entacapone on the metabolic fate of the norepinephrine prodrug L-DOPS. [2011.01]
BACKGROUND: L-threo-3,4-dihydroxyphenylserine (L-DOPS), a norepinephrine (NE) prodrug, is investigational for orthostatic hypotension, which occurs commonly in Parkinson's disease. Adjunctive anti-parkinsonian drugs might interact with L-DOPS. We tested whether L-aromatic amino-acid decarboxylase inhibition by carbidopa (CAR) attenuates L-DOPS conversion to NE and blocks the pressor effect of L-DOPS, whereas catechol-O-methyltransferase inhibition by entacapone (ENT) interferes with L-DOPS metabolism and augments the pressor effect... CONCLUSIONS: After L-DOPS administration plasma, NE levels do not increase sufficiently to increase blood pressure. Pressor responses to L-DOPS seem to reflect NE produced extraneuronally that escapes extensive enzymatic deamination and O-methylation and evokes vasoconstriction before reaching the systemic circulation.

Effects of carbidopa and entacapone on the metabolic fate of the norepinephrine prodrug L-DOPS. [2011]
interferes with L-DOPS metabolism and augments the pressor effect... CONCLUSIONS: After L-DOPS administration plasma, NE levels do not increase

Night-time bioavailability of levodopa/carbidopa/entacapone is higher compared to controlled-release levodopa/carbidopa. [2010.11]
OBJECTIVE: Controlled-release levodopa/carbidopa (CR-LC) is often used to provide prolonged control of night-time motor symptoms in patients with Parkinson's disease (PD). Levodopa/carbidopa/entacapone (LCE) provides higher bioavailability of levodopa compared with levodopa/carbidopa formulations and has been shown to be effective in PD patients with wearing-off symptoms. The aim of this study was to compare the bioavailability of levodopa after a single evening dose (administered at 10 p.m.) of LCE 200 or CR-LC 200... CONCLUSIONS: The results of this study demonstrate that a single bedtime dose of LCE 200 provides higher bioavailability of levodopa compared to CR-LC 200.

Initiating levodopa/carbidopa therapy with and without entacapone in early Parkinson disease: the STRIDE-PD study. [2010.07]
OBJECTIVE: L-dopa is the most widely used and most effective therapy for Parkinson disease (PD), but chronic treatment is associated with motor complications in the majority of patients. It has been hypothesized that providing more continuous delivery of L-dopa to the brain would reduce the risk of motor complications, and that this might be accomplished by combining L-dopa with entacapone, an inhibitor of catechol-O-methyltransferase, to extend its elimination half-life... INTERPRETATION: Initiating L-dopa therapy with LCE failed to delay the time of onset or reduce the frequency of dyskinesia compared to LC. In fact, LCE was associated with a shorter time to onset and increased frequency of dyskinesia compared to LC. These results may reflect that the treatment protocol employed did not provide continuous L-dopa availability and the higher L-dopa dose equivalents in the LCE group.

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Clinical Trials Related to Comtan (Entacapone)

Bioequivalence Study of Carbidopa/Levodopa/Entacapone Combination vs. Carbidopa/Levodopa Combination Plus Entacapone in Healthy Volunteers [Completed]

Bioequivalence Study of Carbidopa/Levodopa/Entacapone Combination vs. Carbidopa/Levodopa Combination Plus Entacapone in Healthy Volunteers [Completed]

Bioequivalence Study of Carbidopa/Levodopa/Entacapone Combination vs. Carbidopa/Levodopa Combination Plus Entacapone in Healthy Volunteers [Completed]

Bioequivalence Study of Carbidopa/Levodopa/Entacapone Combination vs. Carbidopa/Levodopa Combination Plus Entacapone Under Fasting Conditions in Healthy Volunteers [Completed]

Carbidopa/Levodopa/Entacapone Versus Immediate Release (IR) Carbidopa/Levodopa on Non-Motor Symptoms in Patients With Idiopathic Parkinson's Disease [Recruiting]
The purpose of this study is to test the effects of carbidopa/levodopa/entacapone compared to the effects of immediate-release carbidopa/levodopa on end-of-dose wearing off in persons who have Parkinson's disease.

more trials >>

Reports of Suspected Comtan (Entacapone) Side Effects

Dysphagia (8)Pain in Extremity (8)Blood Creatine Phosphokinase Increased (6)Parkinson's Disease (6)Abnormal Behaviour (6)Dyskinesia (5)Muscle Spasms (5)Chromaturia (5)Akinesia (5)Tremor (5)more >>


Page last updated: 2014-09-26

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