Flexeril and Allopurinol drug interactions - a phase IV clinical study of FDA data
Summary:
Drug interactions are reported among people who take Flexeril (cyclobenzaprine hydrochloride) and Allopurinol (allopurinol). Common drug interactions include dyspnoea among females and pain among males.
The phase IV clinical study analyzes what interactions people have when they take Flexeril and Allopurinol. It is created by eHealthMe based on reports of 858 people who take the same drugs from the FDA, and is updated regularly.
What is Flexeril?
Flexeril has active ingredients of cyclobenzaprine hydrochloride. It is often used in muscle spasms. eHealthMe is studying from 38,308 Flexeril users. Check the latest studies of Flexeril.
What is Allopurinol?
Allopurinol has active ingredients of allopurinol. It is often used in gout. eHealthMe is studying from 190,868 Allopurinol users. Check the latest studies of Allopurinol.
858 people who take Flexeril and Allopurinol together, and have interactions are studied.

What are the common drug interactions of Flexeril and Allopurinol, by gender? *
What are the common drug interactions of Flexeril and Allopurinol, by age (0-1 to 60+)? *
What are the existing conditions these people have? *
* Approximation only. Some reports may have incomplete information.
Do you take Flexeril and Allopurinol?
- Personalize this study to your gender, age, symptoms and drugs
- Predict drug outcomes for up to one year with AI
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Related studies:
Effectiveness of, side effects of, and alternative drugs to the 2 drugs:
- Flexeril (38,308 reports)
- Allopurinol (190,868 reports)
Browse all drug interactions of Flexeril and Allopurinol:
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 zSub-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 Flexeril:
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 zBrowse all side effects of Allopurinol:
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 zBrowse all interactions between Flexeril and drugs from A to Z:
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 zBrowse all interactions between Allopurinol and drugs from A to Z:
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 zHow the study uses the data?
The study uses data from the FDA. It is based on cyclobenzaprine hydrochloride and allopurinol (the active ingredients of Flexeril and Allopurinol, respectively), and Flexeril and Allopurinol (the brand names). 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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