Fentora and Convulsion - a phase IV clinical study of FDA data

Summary:

Convulsion is reported as a side effect among people who take Fentora (fentanyl citrate), especially for people who are female, 40-49 old, also take Keppra, and have Complex regional pain syndrome.

The phase IV clinical study analyzes which people have Convulsion when taking Fentora. It is created by eHealthMe based on reports of 26,472 people who have side effects when taking Fentora from the FDA, and is updated regularly.

What is Fentora?

Fentora has active ingredients of fentanyl citrate. eHealthMe is studying from 26,490 Fentora users. Check the latest studies of Fentora.

What is Convulsion?

Convulsion (muscles contract and relax rapidly and repeatedly, resulting in an uncontrolled shaking of the body) is found to be associated with 1,863 drugs and 2,856 conditions by eHealthMe. Check the latest studies of Convulsion.

On Jul, 09, 2026

26,472 people reported to have side effects when taking Fentora.
Among them, 17 people (0.06%) have Convulsion.

Among these 17 people:

What is the gender of people who have Convulsion when taking Fentora? *

female: 64.71 %
male: 35.29 %

What is the age of people who have Convulsion when taking Fentora? *

What are other drugs people take besides Fentora? *

What are other side effects people have besides Convulsion? *

Dyspnea (difficult or laboured breathing): 5 people, 29.41%
Weight Decreased: 4 people, 23.53%
Diarrhea: 4 people, 23.53%
Headache (pain in head): 4 people, 23.53%
Gait Disturbance: 4 people, 23.53%
Weakness: 4 people, 23.53%
Tremor (trembling or shaking movements in one or more parts of your body): 3 people, 17.65%
Sinusitis (inflammation of sinus): 3 people, 17.65%
Pain In Extremity: 3 people, 17.65%
Muscle Spasms (muscle contraction): 3 people, 17.65%

What are the existing conditions these people have? *

Complex Regional Pain Syndrome (long lasting pain condition most often affecting one of the limbs (arms, legs, hands, or feet)): 3 people, 17.65%
Brain Neoplasm Malignant (brain cancer tumour): 2 people, 11.76%
Pain: 2 people, 11.76%
Depression: 2 people, 11.76%
Metastases To Bone (cancer spreads to bone): 2 people, 11.76%
Sleep Disorder: 2 people, 11.76%
Stress And Anxiety: 1 person, 5.88%
Gastroesophageal Reflux Disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 1 person, 5.88%
Brain Neoplasm (tumour of brain): 1 person, 5.88%
Cancer Pain: 1 person, 5.88%

* Approximation only. Some reports may have incomplete information.

Do you take Fentora and have Convulsion?

- Check whether Convulsion 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 Fentora:

Fentora (26,490 reports)

Convulsion treatments and more:

Convulsion (99,535 reports)

Browse all side effects of Fentora:

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 Convulsion:

Convulsion (1,863 drugs)

Browse all the conditions that are associated with Convulsion:

Convulsion (2,856 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on fentanyl citrate (the active ingredients of Fentora) and Fentora (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.