Topiramate and Lymphopenia - a phase IV clinical study of FDA data

Summary:

Lymphopenia is reported as a side effect among people who take Topiramate (topiramate), especially for people who are female, 40-49 old, have been taking the drug for 1 - 2 years also take Fish Oil, and have Migraine with aura.

The phase IV clinical study analyzes which people have Lymphopenia when taking Topiramate. It is created by eHealthMe based on reports of 48,099 people who have side effects when taking Topiramate from the FDA, and is updated regularly.

What is Topiramate?

Topiramate has active ingredients of topiramate. It is often used in migraine. eHealthMe is studying from 49,808 Topiramate users. Check the latest studies of Topiramate.

What is Lymphopenia?

Lymphopenia (an abnormally low level of lymphocytes in the blood) is found to be associated with 898 drugs and 1,072 conditions by eHealthMe. Check the latest studies of Lymphopenia.



On Jun, 17, 2026

48,099 people reported to have side effects when taking Topiramate.
Among them, 39 people (0.08%) have Lymphopenia.

Could Topiramate cause Lymphopenia?

Among these 39 people:

How long have people been on Topiramate when they have Lymphopenia? *

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

What is the gender of people who have Lymphopenia when taking Topiramate? *

  • female: 62.86 %
  • male: 37.14 %

What is the age of people who have Lymphopenia when taking Topiramate? *

  • 0-1: 0.0 %
  • 2-9: 8.82 %
  • 10-19: 11.76 %
  • 20-29: 0.0 %
  • 30-39: 5.88 %
  • 40-49: 44.12 %
  • 50-59: 14.71 %
  • 60+: 14.71 %

What are other drugs people take besides Topiramate? *

  1. Fish Oil: 9 people, 23.08%
  2. Vitamin D3: 8 people, 20.51%
  3. Prednisone: 8 people, 20.51%
  4. Acetaminophen: 7 people, 17.95%
  5. Symbicort: 7 people, 17.95%
  6. Diovan: 6 people, 15.38%
  7. Aspirin: 6 people, 15.38%
  8. Omeprazole: 6 people, 15.38%
  9. Mestinon: 5 people, 12.82%
  10. Singulair: 5 people, 12.82%

What are other side effects people have besides Lymphopenia? *

  1. Fatigue (feeling of tiredness): 20 people, 51.28%
  2. Drowsiness: 14 people, 35.90%
  3. Agranulocytosis (a deficiency of granulocytes in the blood, causing increased vulnerability to infection): 13 people, 33.33%
  4. Oropharyngeal Pain: 13 people, 33.33%
  5. Infection: 12 people, 30.77%
  6. Aphonia (inability to produce voice): 10 people, 25.64%
  7. Head Injury: 10 people, 25.64%
  8. Weakness: 9 people, 23.08%
  9. Dyspnea (difficult or laboured breathing): 9 people, 23.08%
  10. White Blood Cell Count Increased: 8 people, 20.51%

What are the existing conditions these people have? *

  1. Migraine With Aura (headache with vision weakness): 10 people, 25.64%
  2. Relapsing-Remitting Multiple Sclerosis (reoccurrence of an inflammatory disease in which the insulating covers of nerve cells in the brain and spinal cord are damaged): 5 people, 12.82%
  3. Immunodeficiency Common Variable: 5 people, 12.82%
  4. Multiple Sclerosis (a nervous system disease that affects your brain and spinal cord. it damages the myelin sheath): 4 people, 10.26%
  5. Pachymeningitis (inflammation of the dura mater or outer membrane of the brain): 3 people, 7.69%
  6. Bipolar Disorder (mood disorder): 3 people, 7.69%
  7. Pain: 3 people, 7.69%
  8. Primary Immunodeficiency Syndrome: 2 people, 5.13%
  9. Fatigue (feeling of tiredness): 2 people, 5.13%
  10. Neuropathy Peripheral (surface nerve damage): 2 people, 5.13%

* Approximation only. Some reports may have incomplete information.

Do you take Topiramate and have Lymphopenia?

- Check whether Lymphopenia 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 Topiramate:

Lymphopenia treatments and more:

How severe was Lymphopenia 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 Topiramate:

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 Lymphopenia:

Browse all the conditions that are associated with Lymphopenia:

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 Topiramate) and Topiramate (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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