Flomax and Actiq drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Flomax (tamsulosin hydrochloride) and Actiq (fentanyl citrate). Common drug interactions include bronchitis among females and nausea among males.

The phase IV clinical study analyzes what interactions people have when they take Flomax and Actiq. It is created by eHealthMe based on reports of 22 people who take the same drugs from the FDA, and is updated regularly.

What is Flomax?

Flomax has active ingredients of tamsulosin hydrochloride. It is often used in enlarged prostate. eHealthMe is studying from 52,865 Flomax users. Check the latest studies of Flomax.

What is Actiq?

Actiq has active ingredients of fentanyl citrate. It is often used in pain. eHealthMe is studying from 27,583 Actiq users. Check the latest studies of Actiq.

On Jul, 20, 2026

22 people who take Flomax and Actiq together, and have interactions are studied.

What are the common drug interactions of Flomax and Actiq, by gender? *:

female:

Bronchitis (inflammation of the mucous membrane in the bronchial tubes)
Diarrhoea
Fall
Gastrointestinal haemorrhage (bleeding gastrointestinal tract)
Malabsorption (a state arising from abnormality in absorption of food nutrients across the gastrointestinal (gi) tract)

male:

Nausea (feeling of having an urge to vomit)
Drug withdrawal syndrome (interfere with normal social, occupational, or other functioning. are not due to another medical condition, drug use, or discontinuation)
Anxiety
Arachnoiditis (neuropathic disease caused by inflammation of the arachnoid)
Back pain
Blood urine present
Dehydration (dryness resulting from the removal of water)
Dependence
Diarrhoea
Drug dependence

What are the common drug interactions of Flomax and Actiq, 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:

Fall
Aphasia (damage to the parts of the brain that control language)
Bronchitis (inflammation of the mucous membrane in the bronchial tubes)
Feeling hot
Hallucination (an experience involving the perception of something not present)
Hypoaesthesia (reduced sense of touch or sensation)
Lethargy (tiredness)
Paranoia (psychotic disorder characterized by delusions of persecution with or without grandeur)
Withdrawal syndrome (a discontinuation syndrome is a set of symptoms occurred due to discontinuation of substance)

50-59:

Blood urine present
Faecal incontinence (a lack of control over passing stool)
Spinal cord compression
Urinary incontinence (inability to control the flow of urine and involuntary urination)
Abasia (inability to walk)
Arthralgia (joint pain)
Bedridden
Blood glucose increased
Bone pain
Dependence

60+:

Asthenia (weakness)
Dehydration (dryness resulting from the removal of water)
Confusional state
Death
Dental caries
Drug withdrawal syndrome (interfere with normal social, occupational, or other functioning. are not due to another medical condition, drug use, or discontinuation)
Dry mouth
Dyspnoea (difficult or laboured respiration)
Hypertension (high blood pressure)
Hypotension (abnormally low blood pressure)

What are the existing conditions these people have? *

High Blood Pressure: 4 people, 18.18%
Prostatic Disorder: 3 people, 13.64%
Multiple Myeloma (cancer of the plasma cells): 3 people, 13.64%
Thrombosis (formation of a blood clot inside a blood vessel): 2 people, 9.09%
Prostate Cancer: 2 people, 9.09%
Post Laminectomy Syndrome: 2 people, 9.09%
Neuralgia (pain in one or more nerves): 2 people, 9.09%
Neck Pain: 2 people, 9.09%
Complex Regional Pain Syndrome (long lasting pain condition most often affecting one of the limbs (arms, legs, hands, or feet)): 2 people, 9.09%
Chronic Obstructive Pulmonary Disease (a progressive disease that makes it hard to breathe): 2 people, 9.09%

* Approximation only. Some reports may have incomplete information.

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