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

Summary:

Irritability is reported as a side effect among people who take Tylenol w/ codeine (acetaminophen; codeine phosphate), especially for people who are female, 50-59 old, have been taking the drug for < 1 month also take Aspirin, and have Arthritis.

The phase IV clinical study analyzes which people have Irritability 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 Irritability?

Irritability is found to be associated with 1,695 drugs and 2,463 conditions by eHealthMe. Check the latest studies of Irritability.

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, 25, 2026

7,307 people reported to have side effects when taking Tylenol w/ codeine.
Among them, 38 people (0.52%) have Irritability.

Could Tylenol w/ codeine cause Irritability?

Among these 38 people:

How long have people been on Tylenol w/ codeine when they have Irritability? *

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

female: 76.32 %
male: 23.68 %

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

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

What are other side effects people have besides Irritability? *

Dizziness: 19 people, 50.00%
Tremor (trembling or shaking movements in one or more parts of your body): 16 people, 42.11%
Headache (pain in head): 15 people, 39.47%
Stress And Anxiety: 15 people, 39.47%
Nausea (feeling of having an urge to vomit): 12 people, 31.58%
Insomnia (sleeplessness): 12 people, 31.58%
Chest Pain: 11 people, 28.95%
Fatigue (feeling of tiredness): 11 people, 28.95%
Memory Loss: 10 people, 26.32%
Hyperhidrosis (abnormally increased sweating): 9 people, 23.68%

What are the existing conditions these people have? *

Arthritis (form of joint disorder that involves inflammation of one or more joints): 8 people, 21.05%
Quit Smoking: 7 people, 18.42%
Depression: 4 people, 10.53%
Gastric Disorder (disease of stomach): 4 people, 10.53%
Diabetes: 4 people, 10.53%
Fibromyalgia (a long-term condition which causes pain all over the body): 4 people, 10.53%
Cardiac Disorder: 4 people, 10.53%
Stress And Anxiety: 4 people, 10.53%
Pulmonary Embolism (blockage of the main artery of the lung): 3 people, 7.89%
Nervous System Disorder (a general class of medical conditions affecting the nervous system): 3 people, 7.89%

* Approximation only. Some reports may have incomplete information.

Do you take Tylenol w/ codeine and have Irritability?

- Check whether Irritability 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)

Irritability treatments and more:

Irritability (71,614 reports)

How severe was Irritability and when was it recovered:

Irritability in Tylenol w/ codeine

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

Irritability and drugs with ingredients of acetaminophen; codeine phosphate (263 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 Irritability:

Irritability (1,695 drugs)

Browse all the conditions that are associated with Irritability:

Irritability (2,463 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.