Fentanyl and Avodart drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Fentanyl (fentanyl citrate) and Avodart (dutasteride). Common drug interactions include colitis ischaemic among females and pneumonia among males.

The phase IV clinical study analyzes what interactions people have when they take Fentanyl and Avodart. It is created by eHealthMe based on reports of 72 people who take the same drugs from the FDA, and is updated regularly.

What is Fentanyl?

Fentanyl has active ingredients of fentanyl citrate. It is often used in pain. eHealthMe is studying from 73,301 Fentanyl users. Check the latest studies of Fentanyl.

What is Avodart?

Avodart has active ingredients of dutasteride. It is often used in prostate examination abnormal. eHealthMe is studying from 16,428 Avodart users. Check the latest studies of Avodart.

On Jul, 11, 2026

72 people who take Fentanyl and Avodart together, and have interactions are studied.

What are the common drug interactions of Fentanyl and Avodart, by gender? *:

female:

Colitis ischaemic (due to infection of intestine impaired blood supply to colon)
Hypotension (abnormally low blood pressure)
Rectal haemorrhage (bleeding from anus)

male:

Pneumonia
Arthralgia (joint pain)
Anxiety
Infection
Fatigue (feeling of tiredness)
Nausea (feeling of having an urge to vomit)
Activities of daily living impaired
Anhedonia (inability to experience pleasure from activities usually found enjoyable)
Arthropathy
Balance disorder

What are the common drug interactions of Fentanyl and Avodart, 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:

n/a

50-59:

Lethargy (tiredness)
Neck pain
Neutropenia (an abnormally low number of neutrophils)
Oral pain
Pain in extremity
Skin discolouration (change of skin colour)
Somnolence (a state of near-sleep, a strong desire for sleep)
Tenderness (pain or discomfort when an affected area is touched)
Upper respiratory tract infection
Abdominal discomfort

60+:

Pneumonia
Arthralgia (joint pain)
Anxiety
Infection
Nausea (feeling of having an urge to vomit)
Activities of daily living impaired
Anhedonia (inability to experience pleasure from activities usually found enjoyable)
Arthropathy
Balance disorder
Blindness

What are the existing conditions these people have? *

Constipation: 11 people, 15.28%
Multiple Myeloma (cancer of the plasma cells): 7 people, 9.72%
High Blood Cholesterol: 6 people, 8.33%
Depression: 6 people, 8.33%
Prostate Cancer: 5 people, 6.94%
Narcolepsy (brain's inability to regulate sleep-wake cycles normally): 5 people, 6.94%
Insomnia (sleeplessness): 4 people, 5.56%
Cataplexy (loss of muscle tone accompanied by full conscious awareness): 4 people, 5.56%

* Approximation only. Some reports may have incomplete information.

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