1. Home
  2. Analysis
  3. Theo-dur
  4. Hepatitis

Theo-dur and Hepatitis - a phase IV clinical study of FDA data

Summary:

Hepatitis is reported as a side effect among people who take Theo-dur (theophylline), especially for people who are male, 60+ old, have been taking the drug for < 1 month also take Prednisone, and have Adrenal insufficiency.

The phase IV clinical study analyzes which people have Hepatitis when taking Theo-dur. It is created by eHealthMe based on reports of 4,432 people who have side effects when taking Theo-dur from the FDA, and is updated regularly.

What is Theo-dur?

Theo-dur has active ingredients of theophylline. It is often used in asthma. eHealthMe is studying from 4,451 Theo-dur users. Check the latest studies of Theo-dur.

What is Hepatitis?

Hepatitis (inflammation of the liver) is found to be associated with 1,459 drugs and 1,524 conditions by eHealthMe. Check the latest studies of Hepatitis.

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

4,432 people reported to have side effects when taking Theo-dur.
Among them, 42 people (0.95%) have Hepatitis.

Could Theo-dur cause Hepatitis?

Among these 42 people:

How long have people been on Theo-dur when they have Hepatitis? *

  • < 1 month: 66.67 %
  • 1 - 6 months: 16.67 %
  • 6 - 12 months: 0.0 %
  • 1 - 2 years: 0.0 %
  • 2 - 5 years: 0.0 %
  • 5 - 10 years: 16.67 %
  • 10+ years: 0.0 %

What is the gender of people who have Hepatitis when taking Theo-dur? *

  • female: 47.62 %
  • male: 52.38 %

What is the age of people who have Hepatitis when taking Theo-dur? *

  • 0-1: 0.0 %
  • 2-9: 2.44 %
  • 10-19: 4.88 %
  • 20-29: 0.0 %
  • 30-39: 7.32 %
  • 40-49: 21.95 %
  • 50-59: 21.95 %
  • 60+: 41.46 %

What are other drugs people take besides Theo-dur? *

  1. Prednisone: 16 people, 38.10%
  2. Serevent: 15 people, 35.71%
  3. Albuterol: 9 people, 21.43%
  4. Prilosec: 9 people, 21.43%
  5. Lasix: 8 people, 19.05%
  6. Singulair: 7 people, 16.67%
  7. Accolate: 6 people, 14.29%
  8. Atrovent: 6 people, 14.29%
  9. Tilade: 5 people, 11.90%
  10. Astelin: 5 people, 11.90%

What are other side effects people have besides Hepatitis? *

  1. Liver Function Tests Nos Abnormal: 16 people, 38.10%
  2. Hepatic Failure (liver failure): 10 people, 23.81%
  3. Fever: 9 people, 21.43%
  4. Cholestasis (a condition where bile cannot flow from the liver to the duodenum): 8 people, 19.05%
  5. Malaise (a feeling of general discomfort or uneasiness): 7 people, 16.67%
  6. Blood Bilirubin Increased: 7 people, 16.67%
  7. Fatigue (feeling of tiredness): 5 people, 11.90%
  8. Gallstones (stone formation by bile component): 5 people, 11.90%
  9. Chest Pain: 5 people, 11.90%
  10. Ascites (accumulation of fluid in the abdominal cavity): 5 people, 11.90%

What are the existing conditions these people have? *

  1. Spinal Pain (pain in spine): 1 person, 2.38%
  2. Pulmonary Hypertension (increase in blood pressure in the lung artery): 1 person, 2.38%
  3. Lung Squamous Cell Carcinoma Stage Unspecified (lung squamous cell cancer - stage unspecified): 1 person, 2.38%
  4. Insomnia (sleeplessness): 1 person, 2.38%
  5. High Blood Pressure: 1 person, 2.38%
  6. Breathing Sounds - Abnormal (Stridor): 1 person, 2.38%
  7. Adrenal Insufficiency (a condition in which the adrenal glands do not produce adequate amounts of steroids): 1 person, 2.38%

* Approximation only. Some reports may have incomplete information.

Do you take Theo-dur and have Hepatitis?

- Check whether Hepatitis 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 Theo-dur:

Hepatitis treatments and more:

How severe was Hepatitis and when was it recovered:

Expand to all the drugs that have ingredients of theophylline:

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 Theo-dur:

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 Hepatitis:

Browse all the conditions that are associated with Hepatitis:

Related publications that referenced our studies

How the study uses the data?

The study uses data from the FDA. It is based on theophylline (the active ingredients of Theo-dur) and Theo-dur (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.

Recent studies on eHealthMe:

© 2026 eHealthMe.com. All rights reserved. Use of this site constitutes acceptance of eHealthMe.com's terms of service and privacy policy.