Pepcid and Constipation - a phase IV clinical study of FDA data

Summary:

Constipation is reported as a side effect among people who take Pepcid (famotidine), especially for people who are female, 60+ old, have been taking the drug for < 1 month also take Zofran, and have Multiple myeloma.

The phase IV clinical study analyzes which people have Constipation when taking Pepcid. It is created by eHealthMe based on reports of 54,527 people who have side effects when taking Pepcid from the FDA, and is updated regularly.

What is Pepcid?

Pepcid has active ingredients of famotidine. It is often used in gastroesophageal reflux disease. eHealthMe is studying from 55,772 Pepcid users. Check the latest studies of Pepcid.

What is Constipation?

Constipation is found to be associated with 3,004 drugs and 4,602 conditions by eHealthMe. Check the latest studies of Constipation.

On Apr, 08, 2026

54,527 people reported to have side effects when taking Pepcid.
Among them, 1,614 people (2.96%) have Constipation.

Among these 1,614 people:

* Approximation only. Some reports may have incomplete information.

Do you take Pepcid and have Constipation?

- Check whether Constipation 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 Pepcid:

Pepcid (55,772 reports)

Constipation treatments and more:

Constipation (337,876 reports)

How severe was Constipation and when was it recovered:

Constipation in Pepcid

Expand to all the drugs that have ingredients of famotidine:

Constipation and drugs with ingredients of famotidine (3,524 reports)

Sub-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 Pepcid:

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 Constipation:

Constipation (3,004 drugs)

Browse all the conditions that are associated with Constipation:

Constipation (4,602 conditions)

How the study uses the data?

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