Tolcapone

Parkinson Disease

Treatment

2 FDA approvals

6 Active Studies for Tolcapone

What is Tolcapone

Tolcapone

The Generic name of this drug

Treatment Summary

Tolcapone is a medication used to treat Parkinson’s disease when taken with other medications. It works by blocking an enzyme in the body called catechol-O-methyl transferase (COMT). The drug is yellow, odorless, and crystalline in form. However, it can cause liver damage, so it should be taken with caution.

Tasmar

is the brand name

image of different drug pills on a surface

Tolcapone Overview & Background

Brand Name

Generic Name

First FDA Approval

How many FDA approvals?

Tasmar

Tolcapone

2004

5

Approved as Treatment by the FDA

Tolcapone, also known as Tasmar, is approved by the FDA for 2 uses such as Idiopathic Parkinson's Disease and Parkinson Disease .

Idiopathic Parkinson's Disease

Used in combination with other therapies

Parkinson Disease

Used in combination with other therapies

Effectiveness

How Tolcapone Affects Patients

Tolcapone is a drug used to help people with Parkinson's disease. It works by blocking an enzyme called catechol-O-methyltransferase (COMT). This enzyme breaks down substances like dopamine, which is important for controlling movement. When taken with other drugs, such as levodopa, tolcapone can help keep the levels of dopamine in the body more steady, leading to better control of movement and fewer side effects from the other drugs.

How Tolcapone works in the body

Tolcapone works by preventing an enzyme called COMT from breaking down levodopa. This allows levodopa to stay in the bloodstream longer, increasing the amount that reaches the brain. By increasing the amount of levodopa in the brain, it can help reduce the symptoms of Parkinson's disease.

When to interrupt dosage

The advised measure of Tolcapone is contingent upon the diagnosed state of health. The amount of dosage is dependent upon the mode of administration (e.g. Tablet, coated - Oral or Tablet, film coated) described in the following table.

Condition

Dosage

Administration

Parkinson Disease

100.0 mg, , 200.0 mg

, Tablet, film coated, Tablet, film coated - Oral, Oral, Tablet, Tablet - Oral, Tablet, coated, Tablet, coated - Oral

Warnings

Tolcapone has four contraindications and should not be consumed while experiencing the conditions detailed in the subsequent table.

Tolcapone Contraindications

Condition

Risk Level

Notes

Confusion

Do Not Combine

Rhabdomyolysis

Do Not Combine

Hyperthermia

Do Not Combine

prior drug-related hepatocellular injury

Do Not Combine

There are 20 known major drug interactions with Tolcapone.

Common Tolcapone Drug Interactions

Drug Name

Risk Level

Description

Azelastine

Major

Tolcapone may increase the central nervous system depressant (CNS depressant) activities of Azelastine.

Ethanol

Major

Tolcapone may increase the central nervous system depressant (CNS depressant) activities of Ethanol.

Oliceridine

Major

The risk or severity of hypotension, sedation, death, somnolence, and respiratory depression can be increased when Tolcapone is combined with Oliceridine.

Thalidomide

Major

Tolcapone may increase the central nervous system depressant (CNS depressant) activities of Thalidomide.

2-Hydroxyestradiol

Minor

The metabolism of 2-Hydroxyestradiol can be decreased when combined with Tolcapone.

Tolcapone Toxicity & Overdose Risk

The LD50 for the drug when taken orally by rats is 1600mg/kg.

Tolcapone Novel Uses: Which Conditions Have a Clinical Trial Featuring Tolcapone?

There are 6 ongoing trials assessing the potential of Tolcapone to mitigate the symptoms of Parkinson Disease.

Condition

Clinical Trials

Trial Phases

Parkinson Disease

8 Actively Recruiting

Early Phase 1, Phase 2, Not Applicable

Tolcapone Reviews: What are patients saying about Tolcapone?

5

Patient Review

4/21/2009

Tolcapone for Parkinson's Disease

This treatment really helped to supercharge the effectiveness of my carb/levo medications.
image of drug pills surrounding a glass of water symbolizing drug consumption

Patient Q&A Section about tolcapone

These questions and answers are submitted by anonymous patients, and have not been verified by our internal team.

What is tolcapone used to treat?

"Tolcapone is a medication used in combination with levodopa and carbidopa to treat the symptoms of Parkinson's disease. It is only available with a doctor's prescription."

Answered by AI

Why was tolcapone withdrawn?

"Tolcapone is a drug that was approved for use in the United States in 1998 to help treat symptoms of Parkinson's disease. The drug was soon withdrawn after it was linked to several cases of acute liver failure."

Answered by AI

What drug class is tolcapone?

"Tolcapone is a catechol-O-methyl transferase inhibitor used to manage and treat Parkinson disease."

Answered by AI

Does tolcapone increase dopamine?

"Tolcapone is a drug that inhibits the catechol-O-methyl transferase (COMT) enzyme, which is responsible for breaking down the neurotransmitter dopamine. This leads to increased levels of dopamine in the brain, which has a variety of effects on mood and behavior."

Answered by AI

Clinical Trials for Tolcapone

Image of London Health Sciences Center.London ,Ontario in London, Canada.

Wearable Technology for Parkinson's Disease

18+
All Sexes
London, Canada

This study aims to evaluate whether wearable technology can improve the management of motor symptoms in people with Parkinson's disease (PD) who experience motor fluctuations throughout the day. The project will use a smartwatch and mobile app (KinesiaU) to continuously track movement, allowing for more responsive and personalized treatment compared to traditional monitoring methods. In this pilot randomized controlled trial, 32 participants will be assigned to either: A control group receiving standard care, or A wearable device group receiving standard care plus using the smartwatch. Outcomes will be assessed over a 4-week period, focusing on changes in motor function, quality of life, and self-management. The study will also examine feasibility, adherence, and data quality. If successful, this trial will provide critical evidence for integrating wearable devices into routine clinical care for PD, paving the way for larger efficacy trials and more patient-centered care strategies.

Waitlist Available
Has No Placebo

London Health Sciences Center.London ,Ontario (+1 Sites)

Image of University of Florida, Norman Fixel Institute for Neurological Diseases in Gainesville, United States.

Deep Brain Stimulation for Parkinson's Disease

45 - 85
All Sexes
Gainesville, FL

Nearly one-million people in North America are now living with Parkinson's disease (PD), and that number is projected to rise to nearly 1.2 million by 2030. With advancements in neuromodulatory technologies, increasingly more of these individuals elect to undergo deep brain stimulation (DBS) surgery in order to control symptoms of the disease, including refractory tremor, medication-induced dyskinesias, and PD-associated dystonia. The two most common DBS neural targets for controlling these symptoms are the globus pallidus internal segment (GPi) and the subthalamic nucleus (STN). Recent meta-analyses have shown relative equivalence between these two sites at controlling core PD symptoms. To date, there is not conclusive evidence regarding the potential impact of DBS to GPi or STN on laryngeal-mediated functions of voice, swallowing, and cough, and consequently no guidance on whether these outcomes should be considered when selecting DBS target. Therefore, the goal of this project is to determine the impact of DBS neural target (STN versus GPi), lead location within the target, laterality, and stimulation settings on voice, swallow and cough function in people with PD. The larynx is an important player in each of these functions, and our central hypothesis is that spread of stimulation to corticobulbar fibers in the genu of the internal capsule have deleterious effects on laryngeal motor control, resulting in voice, swallow, and cough dysfunction. We have identified three specific aims for this application: 1.) To compare laryngeal function during volitional voice tasks pre-post DBS, and when DBS placement is bilateral versus unilateral for STN and GPi targets. 2.) To compare laryngeal function during volitional and induced cough tasks pre-post DBS, and when DBS placement is bilateral versus unilateral for STN and GPi targets. 3.) To compare airway safety associated with laryngeal onset, degree, and duration of maximum closure during swallowing, pre-post DBS, and when DBS placement is bilateral versus unilateral for STN and GPi targets. These hypotheses were developed based on compelling published and unpublished preliminary data. We will accomplish these aims by enrolling people with PD who are being considered for DBS surgery. We will measure physiologic, functional, and quality of life parameters of voice, swallow and cough pre- and post-surgically. The realization of the proposed aims is significant because it will address a substantial gap in our understanding of DBS outcomes related to communication and airway protection, which are important in terms of morbidity, mortality, and quality of life for patients with PD. The translational potential to provide additional guidance to DBS surgical teams regarding whether voice, swallow or cough functions should be considered with selecting DBS target and/or laterality is high. Ultimately, the project fits squarely within the overarching goal of the research team to deliver the best possible care to people with PD.

Recruiting
Has No Placebo

University of Florida, Norman Fixel Institute for Neurological Diseases

Karen Hegland, Ph.D.

Image of Integrated Health and Movement Science Laboratory, Saint Louis University in St. Louis, United States.

Community Walking Program for Parkinson's Disease

30 - 85
All Sexes
St. Louis, MO

This study will investigate the feasibility of a 6-month community walking program for people with Parkinson's disease (PD) and their care partners in greater Saint Louis, Missouri region. The walking program will consist of weekly, organized walking groups at the Missouri Botanical Gardens. Participants in the program will use Nordic walking poles during the walks. The walking group(s) will meet once per week and will be supervised by walking group leaders from Saint Louis University. Participants will be given a smart watch to wear that will help step counts will be tracked in real-time. The program is designed to get people with Parkinson's disease out of their homes, cultivate a culture of connection with others with Parkinson's disease, and to be collectively accountable for a common goal toward increasing their physical and social engagement in their communities.

Recruiting
Has No Placebo

Integrated Health and Movement Science Laboratory, Saint Louis University (+1 Sites)

Have you considered Tolcapone clinical trials?

We made a collection of clinical trials featuring Tolcapone, we think they might fit your search criteria.
Go to Trials