Gralise and Anaphylaxis - a phase IV clinical study of FDA data

Summary:

Anaphylaxis is reported as a side effect among people who take Gralise (gabapentin), especially for people who are female, 50-59 old, have been taking the drug for < 1 month also take Singulair, and have Cataplexy.

The phase IV clinical study analyzes which people have Anaphylaxis when taking Gralise. It is created by eHealthMe based on reports of 4,175 people who have side effects when taking Gralise from the FDA, and is updated regularly.

What is Gralise?

Gralise has active ingredients of gabapentin. It is often used in neuralgia. eHealthMe is studying from 4,282 Gralise users. Check the latest studies of Gralise.

What is Anaphylaxis?

Anaphylaxis (serious allergic reaction that is rapid in onset and may cause death) is found to be associated with 1,936 drugs and 2,856 conditions by eHealthMe. Check the latest studies of Anaphylaxis.

On Jul, 26, 2026

4,175 people reported to have side effects when taking Gralise.
Among them, 13 people (0.31%) have Anaphylaxis.

Among these 13 people:

How long have people been on Gralise when they have Anaphylaxis? *

What is the gender of people who have Anaphylaxis when taking Gralise? *

female: 92.31 %
male: 7.69 %

What is the age of people who have Anaphylaxis when taking Gralise? *

What are other drugs people take besides Gralise? *

What are other side effects people have besides Anaphylaxis? *

Snoring: 2 people, 15.38%
Nasal Disorder (diseases of nose): 2 people, 15.38%
Drug Hypersensitivity: 2 people, 15.38%
Acne (skin problems that cause pimples): 2 people, 15.38%
Abdominal Discomfort: 2 people, 15.38%
Rosacea (a skin condition that causes facial redness): 1 person, 7.69%
Limb Injury: 1 person, 7.69%
Dyspnea (difficult or laboured breathing): 1 person, 7.69%
Depression: 1 person, 7.69%
Complex Regional Pain Syndrome (long lasting pain condition most often affecting one of the limbs (arms, legs, hands, or feet)): 1 person, 7.69%

What are the existing conditions these people have? *

Narcolepsy (brain's inability to regulate sleep-wake cycles normally): 2 people, 15.38%
Cataplexy (loss of muscle tone accompanied by full conscious awareness): 2 people, 15.38%
Neuritis (inflammation of nerve): 1 person, 7.69%
Idiopathic Urticaria (allergic reactions, presence of hives with unknown cause): 1 person, 7.69%

* Approximation only. Some reports may have incomplete information.

Do you take Gralise and have Anaphylaxis?

- Check whether Anaphylaxis 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 Gralise:

Gralise (4,282 reports)

Anaphylaxis treatments and more:

Anaphylaxis (91,195 reports)

Browse all side effects of Gralise:

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 Anaphylaxis:

Anaphylaxis (1,936 drugs)

Browse all the conditions that are associated with Anaphylaxis:

Anaphylaxis (2,856 conditions)

Related publications that referenced our studies

How the study uses the data?

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