Zyban and Ill-defined disorder - a phase IV clinical study of FDA data

Summary:

Ill-defined disorder is reported as a side effect among people who take Zyban (bupropion hydrochloride), especially for people who are female, 50-59 old, have been taking the drug for < 1 month also take Tylenol, and have Hyperlipidaemia.

The phase IV clinical study analyzes which people have Ill-defined disorder when taking Zyban. It is created by eHealthMe based on reports of 7,776 people who have side effects when taking Zyban from the FDA, and is updated regularly.

What is Zyban?

Zyban has active ingredients of bupropion hydrochloride. It is often used in quit smoking. eHealthMe is studying from 8,029 Zyban users. Check the latest studies of Zyban.

What is Ill-defined disorder?

Ill-defined disorder is found to be associated with 1,461 drugs and 1,258 conditions by eHealthMe. Check the latest studies of Ill-defined disorder.

On Aug, 09, 2026

7,776 people reported to have side effects when taking Zyban.
Among them, 30 people (0.39%) have Ill-defined disorder.

Among these 30 people:

How long have people been on Zyban when they have Ill-defined disorder? *

What is the gender of people who have Ill-defined disorder when taking Zyban? *

female: 72.41 %
male: 27.59 %

What is the age of people who have Ill-defined disorder when taking Zyban? *

What are other drugs people take besides Zyban? *

What are other side effects people have besides Ill-defined disorder? *

Headache (pain in head): 11 people, 36.67%
Nausea (feeling of having an urge to vomit): 9 people, 30.00%
Muscle Spasms (muscle contraction): 8 people, 26.67%
Abdominal Distension: 7 people, 23.33%
Malaise (a feeling of general discomfort or uneasiness): 7 people, 23.33%
Cough: 7 people, 23.33%
Arthritis (form of joint disorder that involves inflammation of one or more joints): 6 people, 20.00%
Urinary Tract Infection: 6 people, 20.00%
Tremor (trembling or shaking movements in one or more parts of your body): 6 people, 20.00%
Weakness: 6 people, 20.00%

What are the existing conditions these people have? *

Rheumatoid Arthritis (a chronic progressive disease causing inflammation in the joints): 3 people, 10.00%
Hyperlipidaemia (presence of excess lipids in the blood): 3 people, 10.00%
High Blood Pressure: 2 people, 6.67%
Multiple Sclerosis (a nervous system disease that affects your brain and spinal cord. it damages the myelin sheath): 1 person, 3.33%
High Blood Cholesterol: 1 person, 3.33%
Gait Disturbance: 1 person, 3.33%
Coronary Heart Disease (narrowing or blockage of the coronary arteries): 1 person, 3.33%
Birth Control: 1 person, 3.33%
Asthma: 1 person, 3.33%
Arrhythmias (irregular heartbeat): 1 person, 3.33%

* Approximation only. Some reports may have incomplete information.

Do you take Zyban and have Ill-defined disorder?

- Check whether Ill-defined disorder 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 Zyban:

Zyban (8,029 reports)

Browse all side effects of Zyban:

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 Ill-defined disorder:

Ill-defined disorder (1,461 drugs)

Browse all the conditions that are associated with Ill-defined disorder:

Ill-defined disorder (1,258 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on bupropion hydrochloride (the active ingredients of Zyban) and Zyban (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.