Allopurinol and Enterocolitis haemorrhagic - a phase IV clinical study of FDA data

Summary:

Enterocolitis haemorrhagic is reported as a side effect among people who take Allopurinol (allopurinol), especially for people who are male, 60+ old, have been taking the drug for 1 - 6 months also take Levofloxacin, and have High blood pressure.

The phase IV clinical study analyzes which people have Enterocolitis haemorrhagic when taking Allopurinol. It is created by eHealthMe based on reports of 188,106 people who have side effects when taking Allopurinol from the FDA, and is updated regularly.

What is Allopurinol?

Allopurinol has active ingredients of allopurinol. It is often used in gout. eHealthMe is studying from 190,869 Allopurinol users. Check the latest studies of Allopurinol.

What is Enterocolitis haemorrhagic?

Enterocolitis haemorrhagic (bleeding and inflammation of the digestive tract, involving enteritis of the small intestine and colitis of the colon) is found to be associated with 178 drugs and 390 conditions by eHealthMe. Check the latest studies of Enterocolitis haemorrhagic.

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 Sep, 01, 2026

188,106 people reported to have side effects when taking Allopurinol.
Among them, 29 people (0.02%) have Enterocolitis haemorrhagic.

Could Allopurinol cause Enterocolitis haemorrhagic?

Among these 29 people:

How long have people been on Allopurinol when they have Enterocolitis haemorrhagic? *

What is the gender of people who have Enterocolitis haemorrhagic when taking Allopurinol? *

female: 37.04 %
male: 62.96 %

What is the age of people who have Enterocolitis haemorrhagic when taking Allopurinol? *

What are other drugs people take besides Allopurinol? *

What are other side effects people have besides Enterocolitis haemorrhagic? *

Anaemia (lack of blood): 8 people, 27.59%
Thrombocytopenia (decrease of platelets in blood): 7 people, 24.14%
Cytomegalovirus Enterocolitis (virus infection of intestine and colon): 6 people, 20.69%
Pleurisy (inflammation of the pleurae, which causes pain when breathing): 5 people, 17.24%
Gastrointestinal Haemorrhage (bleeding gastrointestinal tract): 5 people, 17.24%
Neutrophil Count Decreased (less than normal number of neutrophil a type of blood cell): 5 people, 17.24%
Erythema Multiforme (a type of hypersensitivity reaction): 4 people, 13.79%
Disease Progression: 3 people, 10.34%
Hepatitis (inflammation of the liver): 3 people, 10.34%
C-Reactive Protein Increased: 3 people, 10.34%

What are the existing conditions these people have? *

High Blood Pressure: 8 people, 27.59%
Diabetes: 5 people, 17.24%
Chronic Myeloid Leukaemia (long lasting type of cancer that starts in the blood-forming cells of the bone marrow and invades the blood): 5 people, 17.24%
Hyperuricaemia (level of uric acid in the blood that is abnormally high): 4 people, 13.79%
Metastatic Neoplasm (spreadable cancer tumour): 3 people, 10.34%
Pain: 3 people, 10.34%
Diarrhea: 3 people, 10.34%
Gastroesophageal Reflux Disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 2 people, 6.90%
Bronchitis (inflammation of the mucous membrane in the bronchial tubes): 2 people, 6.90%
High Blood Cholesterol: 2 people, 6.90%

* Approximation only. Some reports may have incomplete information.

Do you take Allopurinol and have Enterocolitis haemorrhagic?

- Check whether Enterocolitis haemorrhagic 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 Allopurinol:

Allopurinol (190,869 reports)

Browse 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 z

Browse all the drugs that are associated with Enterocolitis haemorrhagic:

Enterocolitis haemorrhagic (178 drugs)

Browse all the conditions that are associated with Enterocolitis haemorrhagic:

Enterocolitis haemorrhagic (390 conditions)

How the study uses the data?

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