Allopurinol and Red blood cell count increased - a phase IV clinical study of FDA data

Summary:

Red blood cell count increased 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 6 - 12 months also take Jakafi, and have Polycythaemia vera.

The phase IV clinical study analyzes which people have Red blood cell count increased 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 190,868 Allopurinol users. Check the latest studies of Allopurinol.

What is Red blood cell count increased?

Red blood cell count increased is found to be associated with 429 drugs and 584 conditions by eHealthMe. Check the latest studies of Red blood cell count increased.

On Jul, 25, 2026

188,106 people reported to have side effects when taking Allopurinol.
Among them, 67 people (0.04%) have Red blood cell count increased.

Could Allopurinol cause Red blood cell count increased?

Among these 67 people:

How long have people been on Allopurinol when they have Red blood cell count increased? *

What is the gender of people who have Red blood cell count increased when taking Allopurinol? *

female: 23.26 %
male: 76.74 %

What is the age of people who have Red blood cell count increased when taking Allopurinol? *

What are other drugs people take besides Allopurinol? *

What are other side effects people have besides Red blood cell count increased? *

White Blood Cell Count Increased: 16 people, 23.88%
Fatigue (feeling of tiredness): 14 people, 20.90%
Thrombocytopenia (decrease of platelets in blood): 14 people, 20.90%
Platelet Count Increased: 13 people, 19.40%
Blood Albumin Decreased: 11 people, 16.42%
Fever: 11 people, 16.42%
Joint Pain: 11 people, 16.42%
Mean Cell Volume Decreased (less of the average red blood cell volume): 11 people, 16.42%
Haematocrit Increased: 11 people, 16.42%
Blood Glucose Increased: 11 people, 16.42%

What are the existing conditions these people have? *

Polycythaemia Vera (blood disorder in which the bone marrow makes too many red blood cells): 14 people, 20.90%
Primary Myelofibrosis (primary disorder of the bone marrow): 12 people, 17.91%
High Blood Pressure: 6 people, 8.96%
Vasculitis (inflammation of a blood vessel or blood vessels): 5 people, 7.46%
Chronic Lymphocytic Leukaemia (cancer in which the bone marrow makes too many lymphocytes (a type of white blood cell)): 5 people, 7.46%
High Blood Cholesterol: 4 people, 5.97%
Chronic Myeloid Leukaemia (long lasting type of cancer that starts in the blood-forming cells of the bone marrow and invades the blood): 3 people, 4.48%
Diabetes: 3 people, 4.48%
Fabry's Disease (build up of a particular type of fat, called globotriaosylceramide, in the body's cells): 3 people, 4.48%
Hyperuricaemia (level of uric acid in the blood that is abnormally high): 3 people, 4.48%

* Approximation only. Some reports may have incomplete information.

Do you take Allopurinol and have Red blood cell count increased?

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Related studies:

Effectiveness of, long term effects of, and alternative drugs to Allopurinol:

Allopurinol (190,868 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 Red blood cell count increased:

Red blood cell count increased (429 drugs)

Browse all the conditions that are associated with Red blood cell count increased:

Red blood cell count increased (584 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.