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


Hyperhidrosis is found among people who take Theo-dur, especially for people who are male, 50-59 old, have been taking the drug for < 1 month.

The phase IV clinical study analyzes which people take Theo-dur and have Hyperhidrosis. It is created by eHealthMe based on reports of 4,353 people who have side effects when taking Theo-dur from the FDA, and is updated regularly. You can use the study as a second opinion to make health care decisions.

Phase IV trials are used to detect adverse drug outcomes and monitor drug effectiveness in the real world. With medical big data and AI algorithms, eHealthMe is running millions of phase IV trials and makes the results available to the public. Our original studies have been referenced on 600+ medical publications including The Lancet, Mayo Clinic Proceedings, and Nature.

On Nov, 15, 2022

4,353 people reported to have side effects when taking Theo-dur.
Among them, 28 people (0.64%) have Hyperhidrosis.

What is Theo-dur?

Theo-dur has active ingredients of theophylline. It is often used in asthma. eHealthMe is studying from 4,372 Theo-dur users for its effectiveness, alternative drugs and more.

What is Hyperhidrosis?

Hyperhidrosis (abnormally increased sweating) is found to be associated with 3,535 drugs and 3,388 conditions by eHealthMe.

Number of Theo-dur and Hyperhidrosis reports submitted per year:

Could Theo-dur cause Hyperhidrosis?

Time on Theo-dur when people have Hyperhidrosis *:

  • < 1 month: 33.33 %
  • 1 - 6 months: 0.0 %
  • 6 - 12 months: 33.33 %
  • 1 - 2 years: 0.0 %
  • 2 - 5 years: 33.33 %
  • 5 - 10 years: 0.0 %
  • 10+ years: 0.0 %

Gender of people who have Hyperhidrosis when taking Theo-dur *:

  • female: 47.83 %
  • male: 52.17 %

Age of people who have Hyperhidrosis when taking Theo-dur *:

  • 0-1: 0.0 %
  • 2-9: 0.0 %
  • 10-19: 4.35 %
  • 20-29: 0.0 %
  • 30-39: 0.0 %
  • 40-49: 26.09 %
  • 50-59: 43.48 %
  • 60+: 26.09 %

Common drugs people take besides Theo-dur *:

  1. Vioxx: 10 people, 35.71%
  2. Naproxen: 10 people, 35.71%
  3. Prednisone: 9 people, 32.14%
  4. Claritin: 9 people, 32.14%
  5. Lipitor: 8 people, 28.57%
  6. Paxil: 8 people, 28.57%
  7. Fosamax: 8 people, 28.57%
  8. Oxycontin: 7 people, 25.00%
  9. Gabapentin: 7 people, 25.00%
  10. Xalatan: 7 people, 25.00%

Common side effects people have besides Hyperhidrosis *:

  1. Breathing Difficulty: 16 people, 57.14%
  2. Nausea And Vomiting: 15 people, 53.57%
  3. Chest Pain: 15 people, 53.57%
  4. Pain: 13 people, 46.43%
  5. Diarrhea: 12 people, 42.86%
  6. Weakness: 12 people, 42.86%
  7. Nausea (feeling of having an urge to vomit): 12 people, 42.86%
  8. Headache (pain in head): 12 people, 42.86%
  9. Fatigue (feeling of tiredness): 10 people, 35.71%
  10. Hypoaesthesia (reduced sense of touch or sensation): 10 people, 35.71%

Common conditions people have *:

  1. Pain: 9 people, 32.14%
  2. Crohn's Disease (condition that causes inflammation of the gastrointestinal tract): 4 people, 14.29%
  3. Schizoaffective Disorder (a mental disorder characterized by disordered thought): 2 people, 7.14%
  4. Osteoarthritis (a joint disease caused by cartilage loss in a joint): 2 people, 7.14%
  5. Type 2 Diabetes: 1 person, 3.57%
  6. Diabetes: 1 person, 3.57%
  7. Bone Density Decreased: 1 person, 3.57%
  8. Bronchiectasis (abnormal widening of the bronchi or their branches, causing a risk of infection): 1 person, 3.57%
  9. Bronchitis (inflammation of the mucous membrane in the bronchial tubes): 1 person, 3.57%
  10. Coagulation Time Shortened: 1 person, 3.57%

* Approximation only. Some reports may have incomplete information.

Do you take Theo-dur and have Hyperhidrosis?

Check whether Hyperhidrosis is associated with a drug or a condition

How to use the study?

You can discuss the study with your doctor, to ensure that all drug risks and benefits are fully discussed and understood.

Related publications that referenced our studies

Related studies

How severe was Hyperhidrosis and when was it recovered:

Expand to all the drugs that have ingredients of theophylline:

Alternative drugs to, pros and cons of Theo-dur:

Common Theo-dur side effects:

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

Hyperhidrosis treatments and more:

COVID vaccines that are related to Hyperhidrosis:

Common drugs associated with Hyperhidrosis:

All the drugs that are associated with Hyperhidrosis:

Common conditions associated with Hyperhidrosis:

All the conditions that are associated with Hyperhidrosis:

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.

Who is eHealthMe?

With medical big data and proven AI 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 600+ 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: Please DO NOT STOP MEDICATIONS without first consulting a physician since doing so could be hazardous to your health.

DISCLAIMER: All material available on 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.

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