Mestinon and Photophobia - a phase IV clinical study of FDA data

Summary:

Photophobia is reported as a side effect among people who take Mestinon (pyridostigmine bromide), especially for people who are female, 30-39 old, also take Heparin, and have Pain.

The phase IV clinical study analyzes which people have Photophobia when taking Mestinon. It is created by eHealthMe based on reports of 5,613 people who have side effects when taking Mestinon from the FDA, and is updated regularly.

What is Mestinon?

Mestinon has active ingredients of pyridostigmine bromide. It is often used in myasthenia gravis. eHealthMe is studying from 5,948 Mestinon users. Check the latest studies of Mestinon.

What is Photophobia?

Photophobia (extreme sensitivity to light) is found to be associated with 1,298 drugs and 1,831 conditions by eHealthMe. Check the latest studies of Photophobia.

On Jul, 12, 2026

5,613 people reported to have side effects when taking Mestinon.
Among them, 25 people (0.45%) have Photophobia.

Among these 25 people:

What is the gender of people who have Photophobia when taking Mestinon? *

female: 60 %
male: 40 %

What is the age of people who have Photophobia when taking Mestinon? *

What are other drugs people take besides Mestinon? *

Heparin: 7 people, 28.00%
Lyrica: 4 people, 16.00%
Sodium Chloride: 4 people, 16.00%
Amantadine: 4 people, 16.00%
Betaxolol Hydrochloride: 4 people, 16.00%
Clonidine Hydrochloride: 4 people, 16.00%
Cyanocobalamin: 4 people, 16.00%
Diphenhydramine Hydrochloride: 4 people, 16.00%
Epinephrine: 4 people, 16.00%
Gabapentin: 4 people, 16.00%

What are other side effects people have besides Photophobia? *

Headache (pain in head): 15 people, 60.00%
Fatigue (feeling of tiredness): 12 people, 48.00%
Dizziness: 11 people, 44.00%
Vision Blurred: 9 people, 36.00%
Diarrhea: 7 people, 28.00%
Nausea (feeling of having an urge to vomit): 7 people, 28.00%
Appetite - Decreased (decreased appetite occurs when you have a reduced desire to eat): 7 people, 28.00%
Pain: 7 people, 28.00%
Speech Disorder: 6 people, 24.00%
Emotional Disorder: 5 people, 20.00%

What are the existing conditions these people have? *

Immunodeficiency: 4 people, 16.00%
Pain: 4 people, 16.00%
Irritable Bowel Syndrome: 3 people, 12.00%
Gastroesophageal Reflux Disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 3 people, 12.00%
Stress And Anxiety: 3 people, 12.00%
Inflammatory Bowel Disease: 3 people, 12.00%
Hypotension (abnormally low blood pressure): 3 people, 12.00%
Hypersensitivity: 3 people, 12.00%
Herpes Simplex (herpes simplex is a common viral infection): 3 people, 12.00%
Fibromyalgia (a long-term condition which causes pain all over the body): 3 people, 12.00%

* Approximation only. Some reports may have incomplete information.

Do you take Mestinon and have Photophobia?

- Check whether Photophobia 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 Mestinon:

Mestinon (5,948 reports)

Photophobia treatments and more:

Photophobia (21,346 reports)

Browse all side effects of Mestinon:

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 Photophobia:

Photophobia (1,298 drugs)

Browse all the conditions that are associated with Photophobia:

Photophobia (1,831 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on pyridostigmine bromide (the active ingredients of Mestinon) and Mestinon (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.