Tylenol w/ codeine and Peritonitis - a phase IV clinical study of FDA data

Summary:

Peritonitis is reported as a side effect among people who take Tylenol w/ codeine (acetaminophen; codeine phosphate), especially for people who are female, 60+ old, also take Premarin, and have Bronchitis.

The phase IV clinical study analyzes which people have Peritonitis when taking Tylenol w/ codeine. It is created by eHealthMe based on reports of 7,307 people who have side effects when taking Tylenol w/ codeine from the FDA, and is updated regularly.

What is Tylenol w/ codeine?

Tylenol w/ codeine has active ingredients of acetaminophen; codeine phosphate. It is often used in pain. eHealthMe is studying from 8,107 Tylenol w/ codeine users. Check the latest studies of Tylenol w/ codeine.

What is Peritonitis?

Peritonitis (inflammation of the peritoneum, the thin tissue that lines the inner wall of the abdomen and covers most of the abdominal organs) is found to be associated with 1,060 drugs and 1,569 conditions by eHealthMe. Check the latest studies of Peritonitis.

On May, 12, 2026

7,307 people reported to have side effects when taking Tylenol w/ codeine.
Among them, 15 people (0.21%) have Peritonitis.

Could Tylenol w/ codeine cause Peritonitis?

Among these 15 people:

What is the gender of people who have Peritonitis when taking Tylenol w/ codeine? *

female: 85.71 %
male: 14.29 %

What is the age of people who have Peritonitis when taking Tylenol w/ codeine? *

What are other drugs people take besides Tylenol w/ codeine? *

What are other side effects people have besides Peritonitis? *

Fever: 10 people, 66.67%
Ascites (accumulation of fluid in the abdominal cavity): 10 people, 66.67%
Pleural Effusion (water on the lungs): 9 people, 60.00%
Weakness: 9 people, 60.00%
Nausea (feeling of having an urge to vomit): 8 people, 53.33%
Bleeding Disorders: 8 people, 53.33%
Haematemesis (vomiting of blood): 7 people, 46.67%
Oedema Peripheral (superficial swelling): 7 people, 46.67%
Abdominal Pain: 7 people, 46.67%
Hepatic Enzyme Increased: 6 people, 40.00%

What are the existing conditions these people have? *

Gastritis (inflammation of stomach): 6 people, 40.00%
Bronchitis (inflammation of the mucous membrane in the bronchial tubes): 6 people, 40.00%
Sinusitis (inflammation of sinus): 5 people, 33.33%
Pneumonia: 5 people, 33.33%
Stroke (sudden death of a portion of the brain cells due to a lack of oxygen): 2 people, 13.33%
Chronic Myeloid Leukaemia (long lasting type of cancer that starts in the blood-forming cells of the bone marrow and invades the blood): 1 person, 6.67%

* Approximation only. Some reports may have incomplete information.

Do you take Tylenol w/ codeine and have Peritonitis?

- Check whether Peritonitis 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 Tylenol w/ codeine:

Tylenol w/ codeine (8,107 reports)

Peritonitis treatments and more:

Peritonitis (27,277 reports)

How severe was Peritonitis and when was it recovered:

Peritonitis in Tylenol w/ codeine

Expand to all the drugs that have ingredients of acetaminophen; codeine phosphate:

Peritonitis and drugs with ingredients of acetaminophen; codeine phosphate (65 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 Tylenol w/ codeine:

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 Peritonitis:

Peritonitis (1,060 drugs)

Browse all the conditions that are associated with Peritonitis:

Peritonitis (1,569 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on acetaminophen; codeine phosphate (the active ingredients of Tylenol w/ codeine) and Tylenol w/ codeine (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.