Firdapse and Abdominal pain - a phase IV clinical study of FDA data

Summary:

Abdominal pain is reported as a side effect among people who take Firdapse (amifampridine), especially for people who are female, 60+ old, have been taking the drug for < 1 month also take Vitamin B12, and have Lambert-eaton syndrome.

The phase IV clinical study analyzes which people have Abdominal pain when taking Firdapse. It is created by eHealthMe based on reports of 2,110 people who have side effects when taking Firdapse from the FDA, and is updated regularly.

What is Firdapse?

Firdapse has active ingredients of amifampridine. eHealthMe is studying from 2,112 Firdapse users. Check the latest studies of Firdapse.

What is Abdominal pain?

Abdominal pain is found to be associated with 3,244 drugs and 5,734 conditions by eHealthMe. Check the latest studies of Abdominal pain.

On Jun, 17, 2026

2,110 people reported to have side effects when taking Firdapse.
Among them, 50 people (2.37%) have Abdominal pain.

Among these 50 people:

How long have people been on Firdapse when they have Abdominal pain? *

What is the gender of people who have Abdominal pain when taking Firdapse? *

female: 85.71 %
male: 14.29 %

What is the age of people who have Abdominal pain when taking Firdapse? *

What are other drugs people take besides Firdapse? *

What are other side effects people have besides Abdominal pain? *

Pain In Extremity: 20 people, 40.00%
Weakness: 18 people, 36.00%
Fall: 17 people, 34.00%
Nausea (feeling of having an urge to vomit): 17 people, 34.00%
Nausea And Vomiting: 16 people, 32.00%
Joint Pain: 14 people, 28.00%
Dyspnea (difficult or laboured breathing): 14 people, 28.00%
Diarrhea: 14 people, 28.00%
Headache (pain in head): 14 people, 28.00%
Back Pain: 13 people, 26.00%

What are the existing conditions these people have? *

Lambert-Eaton Syndrome (this means your immune system mistakenly targets healthy cells and tissues in the body): 47 people, 94.00%
Crohn's Disease (a condition that causes inflammation of the gastrointestinal tract): 7 people, 14.00%
Migraine (headache): 7 people, 14.00%
High Blood Pressure: 6 people, 12.00%
Autoimmune Disorder (a condition in which the immune system attacks the body's normal substances and tissue): 6 people, 12.00%
Pain: 6 people, 12.00%
Neck Pain: 6 people, 12.00%
Nausea (feeling of having an urge to vomit): 5 people, 10.00%
Muscle Spasms (muscle contraction): 5 people, 10.00%
Hypersensitivity: 3 people, 6.00%

* Approximation only. Some reports may have incomplete information.

Do you take Firdapse and have Abdominal pain?

- Check whether Abdominal pain 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 Firdapse:

Firdapse (2,112 reports)

Abdominal pain treatments and more:

Abdominal pain (286,410 reports)

Browse all side effects of Firdapse:

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 Abdominal pain:

Abdominal pain (3,244 drugs)

Browse all the conditions that are associated with Abdominal pain:

Abdominal pain (5,734 conditions)

Related publications that referenced our studies

Bhuvan KC, ALrasheedy AA, Ibrahim MI, "A case report from Nepalese community pharmacy on levofloxacin induced severe abdominal pain", Saudi Pharmaceutical Journal, 2013 Jul .
Bhuvan KC, ALrasheedy AA, Ibrahim MI, "A case report from Nepalese community pharmacy on levofloxacin induced severe abdominal pain", Saudi Pharmaceutical Journal, 2013 Jul .

How the study uses the data?

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