Cytoxan and Joint contracture - a phase IV clinical study of FDA data

Summary:

Joint contracture is reported as a side effect among people who take Cytoxan (cyclophosphamide), especially for people who are male, 50-59 old, have been taking the drug for 2 - 5 years also take Magnevist, and have Nuclear magnetic resonance imaging abdominal.

The phase IV clinical study analyzes which people have Joint contracture when taking Cytoxan. It is created by eHealthMe based on reports of 19,522 people who have side effects when taking Cytoxan from the FDA, and is updated regularly.

What is Cytoxan?

Cytoxan has active ingredients of cyclophosphamide. It is often used in breast cancer. eHealthMe is studying from 19,693 Cytoxan users. Check the latest studies of Cytoxan.

What is Joint contracture?

Joint contracture (a permanent shortening of a muscle or joint) is found to be associated with 333 drugs and 653 conditions by eHealthMe. Check the latest studies of Joint contracture.

eHealthMe: drug outcomes in the real world

eHealthMe runs one of the largest post-marketing drug safety studies in the world. We study millions of patients and 5,000 more each day. Our data-driven phase IV clinical trials have been referenced on 800+ peer-reviewed medical publications including The Lancet, Mayo Clinic Proceedings, and Nature. Tools to study our phase IV findings are available to the public, anonymous and free >>>.

On Aug, 27, 2026

19,522 people reported to have side effects when taking Cytoxan.
Among them, 33 people (0.17%) have Joint contracture.

Among these 33 people:

How long have people been on Cytoxan when they have Joint contracture? *

What is the gender of people who have Joint contracture when taking Cytoxan? *

female: 45.45 %
male: 54.55 %

What is the age of people who have Joint contracture when taking Cytoxan? *

What are other drugs people take besides Cytoxan? *

What are other side effects people have besides Joint contracture? *

Pain: 22 people, 66.67%
Nephrogenic Systemic Fibrosis (involves fibrosis of skin, joints, eyes due to kidney disease): 22 people, 66.67%
Skin Tightness: 21 people, 63.64%
Oedema Peripheral (superficial swelling): 20 people, 60.61%
Skin Hypertrophy (skin cells enlarges): 19 people, 57.58%
Joint Range Of Motion Decreased (disease of joint movement): 18 people, 54.55%
Skin Induration (an abnormally hard spot or area on the skin): 18 people, 54.55%
Rashes (redness): 17 people, 51.52%
Weakness: 14 people, 42.42%
Scar: 13 people, 39.39%

What are the existing conditions these people have? *

Nuclear Magnetic Resonance Imaging Abdominal: 14 people, 42.42%
Nuclear Magnetic Resonance Imaging Brain: 8 people, 24.24%
Convulsion (muscles contract and relax rapidly and repeatedly, resulting in an uncontrolled shaking of the body): 7 people, 21.21%
High Blood Pressure: 6 people, 18.18%
Pain: 5 people, 15.15%
Renal Osteodystrophy (a bone disease occurs when the kidneys fail to maintain the proper levels of calcium and phosphorus in the blood): 3 people, 9.09%
Hypercalcaemia (elevated calcium (ca+) level in the blood): 3 people, 9.09%
Headache (pain in head): 3 people, 9.09%
Joint Pain: 3 people, 9.09%
Immunodeficiency Disorders: 3 people, 9.09%

* Approximation only. Some reports may have incomplete information.

Do you take Cytoxan and have Joint contracture?

- Check whether Joint contracture 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 Cytoxan:

Cytoxan (19,693 reports)

Browse all side effects of Cytoxan:

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 Joint contracture:

Joint contracture (333 drugs)

Browse all the conditions that are associated with Joint contracture:

Joint contracture (653 conditions)

Related publications that referenced our studies

Hu P, Lu L, Hu B, Deng F, Fei WJ, "Cyclophosphamide‐Induced Hypertensive Encephalopathy in a Young Girl With Lupus", The Journal of Clinical Hypertension, 2012 Apr .
Hu P, Lu L, Hu B, Deng F, Fei WJ, "Cyclophosphamide‐Induced Hypertensive Encephalopathy in a Young Girl With Lupus", The Journal of Clinical Hypertension, 2012 Apr .

How the study uses the data?

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