Theophyl and Modafinil drug interactions - a phase IV clinical study of FDA data
Summary:
Drug interactions are reported among people who take Theophyl and Modafinil. Common interactions include atrial fibrillation among females and weight decreased among males.
The phase IV clinical study analyzes what interactions people who take Theophyl and Modafinil have. It is created by eHealthMe based on reports of 24 people who take Theophyl and Modafinil 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.
24 people who take Theophyl and Modafinil together, and have interactions are studied.
What is Theophyl?
Theophyl has active ingredients of theophylline. eHealthMe is studying from 17,648 Theophyl users for its effectiveness, alternative drugs and more.
What is Modafinil?
Modafinil has active ingredients of modafinil. It is often used in narcolepsy. eHealthMe is studying from 17,547 Modafinil users for its effectiveness, alternative drugs and more.
Number of Theophyl and Modafinil reports submitted per year:

Common Theophyl and Modafinil drug interactions by gender *:
female:
- Atrial fibrillation
- Blood potassium decreased
- Drug ineffective
- Fall
- Fluid retention
- Food intolerance
- Foot fracture
- Peripheral swelling
- Pneumonia
- Stress
male:
- Weight decreased
- Cardiac murmur
- Blood potassium decreased
- Cholelithiasis
- Diarrhoea
- Hallucination
- Respiratory failure
- Diabetes mellitus
- Nephrolithiasis
- Psoriatic arthropathy
Common Theophyl and Modafinil drug interactions by age *:
0-1:
n/a
2-9:
n/a
10-19:
n/a
20-29:
n/a
30-39:
n/a
40-49:
n/a
50-59:
- Atrial fibrillation
- Blood potassium decreased
- Drug ineffective
- Fluid retention
- Food intolerance
- Peripheral swelling
- Stress
- Suicidal ideation
- Fall
- Foot fracture
60+:
- Weight decreased
- Abasia
- Aspartate aminotransferase increased
- Atrial fibrillation
- Body height decreased
- Bone callus excessive
- Cataract
- Catheter site haemorrhage
- Cellulitis
- Clostridium difficile colitis
Common conditions people have *:
- Hypersensitivity: 3 people, 12.50%
- Cataplexy (loss of muscle tone accompanied by full conscious awareness): 3 people, 12.50%
- Stress And Anxiety: 2 people, 8.33%
- Respiratory Acidosis (respiratory failure or ventilatory failure, causes the ph of blood and other bodily fluids to decrease): 2 people, 8.33%
* Approximation only. Some reports may have incomplete information.
Do you take Theophyl and Modafinil?
Personalize this study to your gender and ageHow 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
- Korang-Yeboah M, Rahman Z, Shah D, Mohammad A, Wu S, Siddiqui A, Khan MA, "Impact of formulation and process variables on solid-state stability of theophylline in controlled release formulations", International journal of pharmaceutics, 2016 Feb .
- Dhaval MK, "Impact of formulation and process variables on solid-state stability of theophylline in controlled release formulations", International Journal of Pharmaceutics, 2016 Jan .
- Lopes E, Pereira D, da Silva Behrens NS, de Almeida Fonseca H, Calvancanti PO, de Araújo Lima TF, Pradella-Hallinan M, Castro J, Tufik S, Coelho FM, "Cataplexy as a side effect of modafinil in a patient without narcolepsy", Sleep Science, 2014 Mar .
Related studies
Alternative drugs to, pros and cons of the 2 drugs:
Browse all drug interactions of Theophyl and Modafinil:
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 zCommon Theophyl side effects:
- Breathing difficulty: 2,206 reports
- Asthma: 1,369 reports
- Pneumonia: 1,231 reports
- Cough: 1,100 reports
- Chest pain: 1,014 reports
- Drug ineffective: 976 reports
- Fatigue (feeling of tiredness): 898 reports
- Fever: 794 reports
- Chronic obstructive pulmonary disease (a progressive disease that makes it hard to breathe): 790 reports
Browse all side effects of Theophyl:
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 zCommon Modafinil side effects:
- Fatigue (feeling of tiredness): 1,589 reports
- Stress and anxiety: 1,140 reports
- Headache (pain in head): 1,106 reports
- High blood pressure: 1,101 reports
- Depression: 1,049 reports
- Drug ineffective: 1,000 reports
- Dizziness: 897 reports
- Drowsiness: 887 reports
Browse all side effects of Modafinil:
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 zCommon Theophyl interactions:
- Theophyl and Prednisone: 3,376 reports
- Theophyl and Albuterol: 2,657 reports
- Theophyl and Singulair: 2,406 reports
- Theophyl and Spiriva: 2,249 reports
- Theophyl and Furosemide: 1,925 reports
- Theophyl and Aspirin: 1,437 reports
- Theophyl and Omeprazole: 1,364 reports
- Theophyl and Atrovent: 1,158 reports
- Theophyl and Symbicort: 1,147 reports
- Theophyl and Advair hfa: 1,091 reports
Browse all interactions between Theophyl 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 zCommon Modafinil interactions:
- Modafinil and Xyrem: 8,073 reports
- Modafinil and Gabapentin: 3,183 reports
- Modafinil and Vitamin d: 2,986 reports
- Modafinil and Baclofen: 2,228 reports
- Modafinil and Adderall: 2,067 reports
- Modafinil and Omeprazole: 2,056 reports
- Modafinil and Vitamin d3: 1,907 reports
- Modafinil and Ibu: 1,906 reports
- Modafinil and Ibuprofen: 1,890 reports
- Modafinil and Ampyra: 1,656 reports
Browse all interactions between Modafinil 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 zHow the study uses the data?
The study uses data from the FDA. It is based on theophylline and modafinil (the active ingredients of Theophyl and Modafinil, respectively), and Theophyl and Modafinil (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. Patients in the study may take other drugs besides Theophyl and Modafinil.
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, 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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