Zelnorm 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 Zelnorm (tegaserod maleate), especially for people who are female, 40-49 old, also take Estring, and have Breast cancer metastatic.

The phase IV clinical study analyzes which people have Red blood cell count increased when taking Zelnorm. It is created by eHealthMe based on reports of 7,252 people who have side effects when taking Zelnorm from the FDA, and is updated regularly.

What is Zelnorm?

Zelnorm has active ingredients of tegaserod maleate. eHealthMe is studying from 7,261 Zelnorm users. Check the latest studies of Zelnorm.

What is Red blood cell count increased?

Red blood cell count increased is found to be associated with 429 drugs and 587 conditions by eHealthMe. Check the latest studies of Red blood cell count increased.

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, 29, 2026

7,252 people reported to have side effects when taking Zelnorm.
Among them, 17 people (0.23%) have Red blood cell count increased.

Could Zelnorm cause Red blood cell count increased?

Among these 17 people:

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

female: 100 %
male: 0.0 %

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

What are other drugs people take besides Zelnorm? *

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

White Blood Cell Count Decreased: 17 people, 100.00%
Fall: 17 people, 100.00%
Metastases To Thorax (cancer spreads to thorax): 17 people, 100.00%
Metastases To Spine (cancer spreads to spine): 17 people, 100.00%
Metastases To Liver (cancer spreads to liver): 17 people, 100.00%
Lumbar Spinal Stenosis (a medical condition in which the spinal canal narrows and compresses the spinal cord and nerves at the level of the lumbar bone): 17 people, 100.00%
Intervertebral Disc Protrusion (spinal disc protrusion): 17 people, 100.00%
Indigestion: 17 people, 100.00%
Humerus Fracture (injury to the upper arm bone): 17 people, 100.00%
Hiatal Hernia (hernia resulting from the protrusion of part of the stomach through the diaphragm): 17 people, 100.00%

What are the existing conditions these people have? *

Irritable Bowel Syndrome: 17 people, 100.00%
Breast Cancer Metastatic: 17 people, 100.00%

* Approximation only. Some reports may have incomplete information.

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

- Check whether Red blood cell count increased 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 Zelnorm:

Zelnorm (7,261 reports)

Browse all side effects of Zelnorm:

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 (587 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on tegaserod maleate (the active ingredients of Zelnorm) and Zelnorm (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.