Fioricet and Bowel movement irregularity - a phase IV clinical study of FDA data

Summary:

Bowel movement irregularity is reported as a side effect among people who take Fioricet (acetaminophen; butalbital; caffeine), especially for people who are female, 40-49 old, also take Ativan, and have Depression.

The phase IV clinical study analyzes which people have Bowel movement irregularity when taking Fioricet. It is created by eHealthMe based on reports of 11,479 people who have side effects when taking Fioricet from the FDA, and is updated regularly.

What is Fioricet?

Fioricet has active ingredients of acetaminophen; butalbital; caffeine. It is often used in migraine. eHealthMe is studying from 12,423 Fioricet users. Check the latest studies of Fioricet.

What is Bowel movement irregularity?

Bowel movement irregularity is found to be associated with 691 drugs and 629 conditions by eHealthMe. Check the latest studies of Bowel movement irregularity.

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, 02, 2026

11,479 people reported to have side effects when taking Fioricet.
Among them, 12 people (0.1%) have Bowel movement irregularity.

Could Fioricet cause Bowel movement irregularity?

Among these 12 people:

What is the gender of people who have Bowel movement irregularity when taking Fioricet? *

female: 63.64 %
male: 36.36 %

What is the age of people who have Bowel movement irregularity when taking Fioricet? *

What are other drugs people take besides Fioricet? *

What are other side effects people have besides Bowel movement irregularity? *

Stress And Anxiety: 9 people, 75.00%
Dyspnea (difficult or laboured breathing): 9 people, 75.00%
Abdominal Pain Upper: 8 people, 66.67%
Back Pain: 8 people, 66.67%
Diarrhea: 8 people, 66.67%
Malaise (a feeling of general discomfort or uneasiness): 7 people, 58.33%
Bone Disorder: 6 people, 50.00%
Fall: 6 people, 50.00%
Loose Tooth: 6 people, 50.00%
Memory Loss: 6 people, 50.00%

What are the existing conditions these people have? *

Metastases To Bone (cancer spreads to bone): 4 people, 33.33%
Hepatitis C: 4 people, 33.33%
Depression: 4 people, 33.33%
Stress And Anxiety: 3 people, 25.00%
Metastases To Spine (cancer spreads to spine): 3 people, 25.00%
Breast Cancer: 3 people, 25.00%
Seizures (abnormal excessive or synchronous neuronal activity in the brain): 1 person, 8.33%
Narcolepsy (brain's inability to regulate sleep-wake cycles normally): 1 person, 8.33%
Multiple Sclerosis (a nervous system disease that affects your brain and spinal cord. it damages the myelin sheath): 1 person, 8.33%
Breast Cancer Metastatic: 1 person, 8.33%

* Approximation only. Some reports may have incomplete information.

Do you take Fioricet and have Bowel movement irregularity?

- Check whether Bowel movement irregularity 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 Fioricet:

Fioricet (12,423 reports)

Bowel movement irregularity treatments and more:

Bowel movement irregularity (11,012 reports)

How severe was Bowel movement irregularity and when was it recovered:

Bowel movement irregularity in Fioricet

Expand to all the drugs that have ingredients of acetaminophen; butalbital; caffeine:

Bowel movement irregularity and drugs with ingredients of acetaminophen; butalbital; caffeine (37 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 Fioricet:

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 Bowel movement irregularity:

Bowel movement irregularity (691 drugs)

Browse all the conditions that are associated with Bowel movement irregularity:

Bowel movement irregularity (629 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on acetaminophen; butalbital; caffeine (the active ingredients of Fioricet) and Fioricet (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.