Dutasteride and Theophyl drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Dutasteride (dutasteride) and Theophyl (theophylline). Common drug interactions include arrhythmia among females and aggression among males.

The phase IV clinical study analyzes what interactions people have when they take Dutasteride and Theophyl. It is created by eHealthMe based on reports of 28 people who take the same drugs from the FDA, and is updated regularly.

What is Dutasteride?

Dutasteride has active ingredients of dutasteride. It is often used in prostate examination abnormal. eHealthMe is studying from 8,205 Dutasteride users. Check the latest studies of Dutasteride.

What is Theophyl?

Theophyl has active ingredients of theophylline. eHealthMe is studying from 19,174 Theophyl users. Check the latest studies of Theophyl.

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 Aug, 15, 2026

28 people who take Dutasteride and Theophyl together, and have interactions are studied.

Dutasteride and Theophyl drug interactions.

What are the common drug interactions of Dutasteride and Theophyl, by gender? *:

female:

Arrhythmia (irregular heartbeat)
Cardiac failure
Diarrhoea
Mucosal inflammation (infection of mucous membrane)
Sepsis (a severe blood infection that can lead to organ failure and death)

male:

Aggression
Anxiety
Leukopenia (less number of white blood cells in blood)
Nystagmus (a condition of involuntary eye movement)
Pneumonia
Seizure (abnormal excessive or synchronous neuronal activity in the brain)
Sepsis (a severe blood infection that can lead to organ failure and death)
Skin disorder (skin disease)
Anion gap decreased
Arrhythmia (irregular heartbeat)

What are the common drug interactions of Dutasteride and Theophyl, 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:

Arrhythmia (irregular heartbeat)
Cardiac failure
Diarrhoea
Intraocular pressure increased
Mucosal inflammation (infection of mucous membrane)
Sepsis (a severe blood infection that can lead to organ failure and death)

50-59:

Anion gap decreased
Aspartate aminotransferase increased
Blood albumin decreased
Blood creatine phosphokinase increased
Blood glucose increased
Chest pain
Chronic obstructive pulmonary disease (a progressive disease that makes it hard to breathe)
Haematocrit decreased
Haemoglobin decreased
Influenza

60+:

Aggression
Anxiety
Pneumonia
Renal cancer (cancer of kidney)
Seizure (abnormal excessive or synchronous neuronal activity in the brain)
Sepsis (a severe blood infection that can lead to organ failure and death)
Adverse event
Arrhythmia (irregular heartbeat)
Arteriosclerosis (thickening and hardening of arteries)
Cardiac failure

What are the existing conditions these people have? *

Vasculitis (inflammation of a blood vessel or blood vessels): 9 people, 32.14%
Microscopic Polyangiitis (inflammation involving multiple blood or lymph small-vessel): 9 people, 32.14%
Chronic Obstructive Pulmonary Disease (a progressive disease that makes it hard to breathe): 5 people, 17.86%
Ventricular Tachycardia (rapid heartbeat that originates in one of the lower chambers (the ventricles) of the heart): 4 people, 14.29%
Gastric Cancer (stomach cancer): 2 people, 7.14%
Colon Cancer: 2 people, 7.14%

* Approximation only. Some reports may have incomplete information.

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