Topamax and Clonic convulsion - a phase IV clinical study of FDA data

Summary:

Clonic convulsion is reported as a side effect among people who take Topamax (topiramate), especially for people who are female, 10-19 old, also take Onfi, and have Headache.

The phase IV clinical study analyzes which people have Clonic convulsion when taking Topamax. It is created by eHealthMe based on reports of 54,158 people who have side effects when taking Topamax from the FDA, and is updated regularly.

What is Topamax?

Topamax has active ingredients of topiramate. It is often used in migraine. eHealthMe is studying from 58,954 Topamax users. Check the latest studies of Topamax.

What is Clonic convulsion?

Clonic convulsion (long lasting seizure) is found to be associated with 139 drugs and 304 conditions by eHealthMe. Check the latest studies of Clonic convulsion.



On Jul, 19, 2026

54,158 people reported to have side effects when taking Topamax.
Among them, 12 people (0.02%) have Clonic convulsion.

Could Topamax cause Clonic convulsion?

Among these 12 people:

What is the gender of people who have Clonic convulsion when taking Topamax? *

  • female: 66.67 %
  • male: 33.33 %

What is the age of people who have Clonic convulsion when taking Topamax? *

  • 0-1: 9.09 %
  • 2-9: 18.18 %
  • 10-19: 36.36 %
  • 20-29: 0.0 %
  • 30-39: 9.09 %
  • 40-49: 0.0 %
  • 50-59: 18.18 %
  • 60+: 9.09 %

What are other drugs people take besides Topamax? *

  1. Afinitor: 2 people, 16.67%
  2. Clobazam: 2 people, 16.67%
  3. Rufinamide: 2 people, 16.67%
  4. Onfi: 2 people, 16.67%
  5. Keppra: 1 person, 8.33%
  6. Alprazolam: 1 person, 8.33%
  7. Carbamazepine: 1 person, 8.33%
  8. Clonazepam: 1 person, 8.33%
  9. Donepezil: 1 person, 8.33%
  10. Felbamate: 1 person, 8.33%

What are other side effects people have besides Clonic convulsion? *

  1. Convulsion (muscles contract and relax rapidly and repeatedly, resulting in an uncontrolled shaking of the body): 3 people, 25.00%
  2. Fatigue (feeling of tiredness): 3 people, 25.00%
  3. Drug Level Below Therapeutic: 3 people, 25.00%
  4. Confusional State: 2 people, 16.67%
  5. Tonic Convulsion (the person will quickly lose consciousness and the skeletal muscles will suddenly tense, often causing the extremities to be pulled towards the body or rigidly pushed away from it): 2 people, 16.67%
  6. Cardiac Arrest: 2 people, 16.67%
  7. Haemoglobin Decreased: 1 person, 8.33%
  8. Gait Disturbance: 1 person, 8.33%
  9. Foaming At Mouth (excess saliva secretion): 1 person, 8.33%
  10. Fever: 1 person, 8.33%

What are the existing conditions these people have? *

  1. Tuberous Sclerosis (a rare genetic disease that causes benign tumours to grow in the brain and other organs): 2 people, 16.67%
  2. Seizures (abnormal excessive or synchronous neuronal activity in the brain): 2 people, 16.67%
  3. Headache (pain in head): 2 people, 16.67%
  4. Post-Traumatic Stress Disorder: 1 person, 8.33%
  5. Multiple Sclerosis (a nervous system disease that affects your brain and spinal cord. it damages the myelin sheath): 1 person, 8.33%
  6. Convulsion (muscles contract and relax rapidly and repeatedly, resulting in an uncontrolled shaking of the body): 1 person, 8.33%
  7. Brain Neoplasm Benign (non-cancerous tumour of brain): 1 person, 8.33%
  8. Astrocytoma, Low Grade (low grade tumour of the brain that originate in a particular kind of glial-cells): 1 person, 8.33%

* Approximation only. Some reports may have incomplete information.

Do you take Topamax and have Clonic convulsion?

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Related studies:

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

Clonic convulsion treatments and more:

How severe was Clonic convulsion and when was it recovered:

Expand to all the drugs that have ingredients of topiramate:

Sub-studies by gender and age:

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

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

Browse all side effects of Topamax:

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 Clonic convulsion:

Browse all the conditions that are associated with Clonic convulsion:

Related publications that referenced our studies


How the study uses the data?

The study uses data from the FDA. It is based on topiramate (the active ingredients of Topamax) and Topamax (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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