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Tasmar and Erectile dysfunction - a phase IV clinical study of FDA data

Summary:

Erectile dysfunction is reported as a side effect among people who take Tasmar (tolcapone), especially for people who are 10-19 old, have been taking the drug for < 1 month also take Gabitril, and have Epilepsy.

The phase IV clinical study analyzes which people have Erectile dysfunction when taking Tasmar. It is created by eHealthMe based on reports of 1,270 people who have side effects when taking Tasmar from the FDA, and is updated regularly.

What is Tasmar?

Tasmar has active ingredients of tolcapone. eHealthMe is studying from 1,275 Tasmar users. Check the latest studies of Tasmar.

What is Erectile dysfunction?

Erectile dysfunction is found to be associated with 1,587 drugs and 2,060 conditions by eHealthMe. Check the latest studies of Erectile dysfunction.

On Nov, 29, 2025

1,270 people reported to have side effects when taking Tasmar.
Among them, 12 people (0.94%) have Erectile dysfunction.

Could Tasmar cause Erectile dysfunction?

Among these 12 people:

How long have people been on Tasmar when they have Erectile dysfunction? *

  • < 1 month: 100 %
  • 1 - 6 months: 0.0 %
  • 6 - 12 months: 0.0 %
  • 1 - 2 years: 0.0 %
  • 2 - 5 years: 0.0 %
  • 5 - 10 years: 0.0 %
  • 10+ years: 0.0 %

What is the age of people who have Erectile dysfunction when taking Tasmar? *

  • 0-1: 0.0 %
  • 2-9: 0.0 %
  • 10-19: 66.67 %
  • 20-29: 0.0 %
  • 30-39: 0.0 %
  • 40-49: 0.0 %
  • 50-59: 0.0 %
  • 60+: 33.33 %

What are other drugs people take besides Tasmar? *

  1. Topamax: 11 people, 91.67%
  2. Tegretol: 11 people, 91.67%
  3. Neurontin: 11 people, 91.67%
  4. Lamictal: 11 people, 91.67%
  5. Keppra: 11 people, 91.67%
  6. Gabitril: 11 people, 91.67%
  7. Levetiracetam: 8 people, 66.67%
  8. Phenytoin Sodium: 6 people, 50.00%
  9. Carbamazepine: 6 people, 50.00%
  10. Carbidopa And Levodopa: 4 people, 33.33%

What are other side effects people have besides Erectile dysfunction? *

  1. Tremor (trembling or shaking movements in one or more parts of your body): 11 people, 91.67%
  2. Neuroleptic Malignant Syndrome (a life-threatening neurological disorder most often caused by an adverse reaction to neuroleptic or antipsychotic agents): 11 people, 91.67%
  3. Muscle Aches (muscle pain): 11 people, 91.67%
  4. Muscle Function Loss: 11 people, 91.67%
  5. Depression: 11 people, 91.67%
  6. Dyskinesia (abnormality or impairment of voluntary movement): 11 people, 91.67%
  7. Muscle Twitching: 11 people, 91.67%
  8. Fall: 11 people, 91.67%
  9. Nerve Conduction Studies Abnormal: 11 people, 91.67%
  10. Parkinson's Disease: 11 people, 91.67%

What are the existing conditions these people have? *

  1. Epilepsy (common and diverse set of chronic neurological disorders characterized by seizures): 11 people, 91.67%
  2. Parkinson's Disease: 3 people, 25.00%

* Approximation only. Some reports may have incomplete information.

Do you take Tasmar and have Erectile dysfunction?

- Check whether Erectile dysfunction is associated with a drug or a condition
- Predict drug outcomes for up to one year with AI
- Get an AI agent to monitor your drugs continuously

Related studies:

Effectiveness of, long term effects of, and alternative drugs to Tasmar:

Erectile dysfunction treatments and more:

How severe was Erectile dysfunction and when was it recovered:

Expand to all the drugs that have ingredients of tolcapone:

Sub-studies by age:

0-1 2-9 10-19 20-29 30-39 40-49 50-59 60+

Browse all side effects of Tasmar:

a b c d e f g h i j k l m n o p q r s t u v w x y z

Browse all the drugs that are associated with Erectile dysfunction:

Browse all the conditions that are associated with Erectile dysfunction:

How the study uses the data?

The study uses data from the FDA. It is based on tolcapone (the active ingredients of Tasmar) and Tasmar (the brand name). Other drugs that have the same active ingredients (e.g. generic drugs) are not considered. Dosage of drugs is not considered in the study.

How to use the study?

DO NOT STOP MEDICATIONS without first consulting your doctor. If there are any serious or long term adverse effects discovered in the study, discuss the study with your doctor to ensure that proper medication management will be in place if applicable.

Who is eHealthMe?

With medical big data and proven AI/ML algorithms, eHealthMe provides a platform for everyone to run phase IV clinical trials. We study millions of patients and 5,000 more each day. Results of our real-world drug study have been referenced on 800+ peer-reviewed medical publications, including The Lancet, Mayo Clinic Proceedings, and Nature. Our analysis results are available to researchers, health care professionals, patients (testimonials), and software developers (open API).

WARNING, DISCLAIMER, USE FOR PUBLICATION

WARNING: Please DO NOT STOP MEDICATIONS without first consulting a physician since doing so could be hazardous to your health.

DISCLAIMER: All material available on eHealthMe.com is for informational purposes only, and is not a substitute for medical advice, diagnosis, or treatment provided by a qualified healthcare provider. All information is observation-only. Our phase IV clinical studies alone cannot establish cause-effect relationship. Different individuals may respond to medication in different ways. Every effort has been made to ensure that all information is accurate, up-to-date, and complete, but no guarantee is made to that effect. The use of the eHealthMe site and its content is at your own risk.

If you use this eHealthMe study on publication, please acknowledge it with a citation: study title, URL, accessed date.

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