Rapaflo and Viagra drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Rapaflo (silodosin) and Viagra (sildenafil citrate). Common drug interactions include nausea among females and chronic kidney disease among males.

The phase IV clinical study analyzes what interactions people have when they take Rapaflo and Viagra. It is created by eHealthMe based on reports of 60 people who take the same drugs from the FDA, and is updated regularly.

What is Rapaflo?

Rapaflo has active ingredients of silodosin. It is often used in prostate examination abnormal. eHealthMe is studying from 3,929 Rapaflo users. Check the latest studies of Rapaflo.

What is Viagra?

Viagra has active ingredients of sildenafil citrate. It is often used in erection problems. eHealthMe is studying from 63,865 Viagra users. Check the latest studies of Viagra.

On Jun, 11, 2026

60 people who take Rapaflo and Viagra together, and have interactions are studied.

What are the common drug interactions of Rapaflo and Viagra, by gender? *:

female:

Nausea (feeling of having an urge to vomit)

male:

Chronic kidney disease
Drug ineffective
Abdominal pain
Blood iron decreased
Fall
Flushing (the warm, red condition of human skin)
Head injury
Hypertensive nephropathy (hypertensive renal disease)
Muscle spasms (muscle contraction)
Myocardial infarction (destruction of heart tissue resulting from obstruction of the blood supply to the heart muscle)

What are the common drug interactions of Rapaflo and Viagra, by age (0-1 to 60+)? *:

0-1:

n/a

2-9:

n/a

10-19:

Chronic kidney disease

20-29:

n/a

30-39:

n/a

40-49:

Affective disorder (mental disorder)
Depression
Drug ineffective
Feeling hot
Head injury
Lacrimation increased
Peripheral coldness
Sleep apnoea syndrome (a sleep-related disorder in which the effort to breathe is diminished or absent)
Somnolence (a state of near-sleep, a strong desire for sleep)
Suicidal ideation

50-59:

Abdominal discomfort
Drug ineffective
Flushing (the warm, red condition of human skin)
Jc virus infection
Lymphocyte count decreased
Anhedonia (inability to experience pleasure from activities usually found enjoyable)
Anxiety
Chronic kidney disease
Depression
Emotional distress

60+:

Chronic kidney disease
Malignant melanoma (skin cancer rises from melancytes)
Anxiety
Emotional distress
Metastatic malignant melanoma (spreadable cancer tumour of melanine)
Cardiac failure
Cardiac failure congestive
Coronary artery disease (plaque building up along the inner walls of the arteries of the heart, which narrows the arteries and restricts blood flow to the heart)
Kidney infection
Neoplasm malignant (cancer tumour)

What are the existing conditions these people have? *

Narcolepsy (brain's inability to regulate sleep-wake cycles normally): 15 people, 25.00%
Pain: 10 people, 16.67%
Gastroesophageal Reflux Disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 10 people, 16.67%
High Blood Cholesterol: 8 people, 13.33%
High Blood Pressure: 7 people, 11.67%
Multiple Sclerosis (a nervous system disease that affects your brain and spinal cord. it damages the myelin sheath): 6 people, 10.00%
Cardiac Disorder: 5 people, 8.33%
Prostatomegaly (enlargement of the prostate): 4 people, 6.67%
Sleep Disorder: 3 people, 5.00%
Neuropathy Peripheral (surface nerve damage): 3 people, 5.00%

* Approximation only. Some reports may have incomplete information.

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