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Lamotrigine and Lactose intolerance - a phase IV clinical study of FDA data

Summary:

Lactose intolerance is reported as a side effect among people who take Lamotrigine (lamotrigine), especially for people who are female, 2-9 old, have been taking the drug for < 1 month also take Phenytoin, and have Convulsion.

The phase IV clinical study analyzes which people have Lactose intolerance when taking Lamotrigine. It is created by eHealthMe based on reports of 72,834 people who have side effects when taking Lamotrigine from the FDA, and is updated regularly.

What is Lamotrigine?

Lamotrigine has active ingredients of lamotrigine. It is often used in bipolar disorder. eHealthMe is studying from 76,639 Lamotrigine users. Check the latest studies of Lamotrigine.

What is Lactose intolerance?

Lactose intolerance (inability to digest lactose) is found to be associated with 438 drugs and 1,067 conditions by eHealthMe. Check the latest studies of Lactose intolerance.

eHealthMe: drug outcomes in the real world

eHealthMe runs one of the largest post-marketing drug safety studies in the world. We study millions of patients and 5,000 more each day. Our data-driven phase IV clinical trials have been referenced on 800+ peer-reviewed medical publications including The Lancet, Mayo Clinic Proceedings, and Nature. Tools to study our phase IV findings are available to the public, anonymous and free >>>.

On Sep, 04, 2026

72,834 people reported to have side effects when taking Lamotrigine.
Among them, 28 people (0.04%) have Lactose intolerance.

Could Lamotrigine cause Lactose intolerance?

Among these 28 people:

How long have people been on Lamotrigine when they have Lactose intolerance? *

  • < 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 gender of people who have Lactose intolerance when taking Lamotrigine? *

  • female: 85.19 %
  • male: 14.81 %

What is the age of people who have Lactose intolerance when taking Lamotrigine? *

  • 0-1: 0.0 %
  • 2-9: 61.11 %
  • 10-19: 11.11 %
  • 20-29: 5.56 %
  • 30-39: 0.0 %
  • 40-49: 0.0 %
  • 50-59: 5.56 %
  • 60+: 16.67 %

What are other drugs people take besides Lamotrigine? *

  1. Phenytoin: 19 people, 67.86%
  2. Fluconazole: 11 people, 39.29%
  3. Augmentin: 8 people, 28.57%
  4. Augmentin '125': 5 people, 17.86%
  5. Melatonin: 3 people, 10.71%
  6. Ibuprofen: 3 people, 10.71%
  7. Ambien: 2 people, 7.14%
  8. Vitamin E: 2 people, 7.14%
  9. Lexapro: 2 people, 7.14%
  10. Fioricet: 2 people, 7.14%

What are other side effects people have besides Lactose intolerance? *

  1. Drug Ineffective: 21 people, 75.00%
  2. Upper Limb Fracture: 21 people, 75.00%
  3. Vomiting Projectile: 21 people, 75.00%
  4. Rashes (redness): 21 people, 75.00%
  5. Nosebleed (bleeding from nose): 21 people, 75.00%
  6. Diarrhea: 20 people, 71.43%
  7. Pharyngeal Oedema (abnormal accumulation of fluid in the cavities and intercellular spaces of the pharyngeal): 20 people, 71.43%
  8. Convulsion (muscles contract and relax rapidly and repeatedly, resulting in an uncontrolled shaking of the body): 20 people, 71.43%
  9. Abnormal Faeces (abnormal stool): 19 people, 67.86%
  10. Upper Respiratory Tract Infection: 19 people, 67.86%

What are the existing conditions these people have? *

  1. Convulsion (muscles contract and relax rapidly and repeatedly, resulting in an uncontrolled shaking of the body): 19 people, 67.86%
  2. The Flu (the flu is caused by an influenza virus): 7 people, 25.00%
  3. Multiple Myeloma (cancer of the plasma cells): 2 people, 7.14%
  4. Grand Mal Convulsion (a type of generalized seizure that affects the entire brain): 2 people, 7.14%
  5. Seizures (abnormal excessive or synchronous neuronal activity in the brain): 1 person, 3.57%
  6. Psoriasis (immune-mediated disease that affects the skin): 1 person, 3.57%
  7. Personality Disorder: 1 person, 3.57%
  8. Pain: 1 person, 3.57%
  9. Insomnia (sleeplessness): 1 person, 3.57%
  10. Ill-Defined Disorder: 1 person, 3.57%

* Approximation only. Some reports may have incomplete information.

Do you take Lamotrigine and have Lactose intolerance?

- Check whether Lactose intolerance 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 Lamotrigine:

Lactose intolerance treatments and more:

How severe was Lactose intolerance and when was it recovered:

Expand to all the drugs that have ingredients of lamotrigine:

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 Lamotrigine:

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 Lactose intolerance:

Browse all the conditions that are associated with Lactose intolerance:

Related publications that referenced our studies

How the study uses the data?

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