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Acetaminophen and codeine phosphate and Theophylline drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Acetaminophen and codeine phosphate (acetaminophen; codeine phosphate) and Theophylline (theophylline). Common drug interactions include dependence among females and blood creatine phosphokinase increased among males.

The phase IV clinical study analyzes what interactions people have when they take Acetaminophen and codeine phosphate and Theophylline. It is created by eHealthMe based on reports of 14 people who take the same drugs from the FDA, and is updated regularly.

What is Acetaminophen and codeine phosphate?

Acetaminophen and codeine phosphate has active ingredients of acetaminophen; codeine phosphate. It is often used in pain. eHealthMe is studying from 3,220 Acetaminophen and codeine phosphate users. Check the latest studies of Acetaminophen and codeine phosphate.

What is Theophylline?

Theophylline has active ingredients of theophylline. It is often used in asthma. eHealthMe is studying from 19,150 Theophylline users. Check the latest studies of Theophylline.

On Jul, 13, 2026

14 people who take Acetaminophen and codeine phosphate and Theophylline together, and have interactions are studied.

Acetaminophen and codeine phosphate and Theophylline drug interactions.

What are the common drug interactions of Acetaminophen And Codeine Phosphate and Theophylline, by gender? *:

female:

  1. Dependence
  2. Hypoaesthesia (reduced sense of touch or sensation)
  3. Plantar fasciitis (painful inflammatory process of the plantar fascia)
  4. Vomiting
  5. Anaphylactic reaction (serious allergic reaction)
  6. Bronchospasm (spasm of bronchial smooth muscle producing narrowing of the bronchi)
  7. Dry throat
  8. Epistaxis (bleed from the nose)
  9. Oropharyngeal pain
  10. Death

male:

  1. Blood creatine phosphokinase increased
  2. Chest pain
  3. Drug ineffective
  4. Myalgia (muscle pain)

What are the common drug interactions of Acetaminophen And Codeine Phosphate and Theophylline, by age (0-1 to 60+)? *:

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

n/a

30-39:

n/a

40-49:

  1. Dependence
  2. Hypoaesthesia (reduced sense of touch or sensation)
  3. Plantar fasciitis (painful inflammatory process of the plantar fascia)

50-59:

  1. Drug ineffective
  2. Anaphylactic reaction (serious allergic reaction)
  3. Bronchospasm (spasm of bronchial smooth muscle producing narrowing of the bronchi)
  4. Dry throat
  5. Oropharyngeal pain

60+:

  1. Epistaxis (bleed from the nose)
  2. Blood creatine phosphokinase increased
  3. Chest pain
  4. Death
  5. Myalgia (muscle pain)
  6. Vomiting

What are the existing conditions these people have? *

  1. Migraine (headache): 1 person, 7.14%
  2. Age-Related Macular Degeneration: 1 person, 7.14%

* Approximation only. Some reports may have incomplete information.

Do you take Acetaminophen and codeine phosphate and Theophylline?

- Personalize this study to your gender, age, symptoms and drugs
- Predict drug outcomes for up to one year with AI
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Related studies:

Effectiveness of, side effects of, and alternative drugs to the 2 drugs:

Browse all drug interactions of Acetaminophen and codeine phosphate and Theophylline:

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

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 Acetaminophen and codeine phosphate:

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 side effects of Theophylline:

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 interactions between Acetaminophen and codeine phosphate and drugs from A to Z:

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 interactions between Theophylline and drugs from A to Z:

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

Related publications that referenced our studies

How the study uses the data?

The study uses data from the FDA. It is based on acetaminophen; codeine phosphate and theophylline (the active ingredients of Acetaminophen and codeine phosphate and Theophylline, respectively), and Acetaminophen and codeine phosphate and Theophylline (the brand names). 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.

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