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

Summary:

Drug interactions are reported among people who take Hydrea (hydroxyurea) and Viagra (sildenafil citrate). Common drug interactions include disorientation among females and anaemia among males.

The phase IV clinical study analyzes what interactions people have when they take Hydrea and Viagra. It is created by eHealthMe based on reports of 17 people who take the same drugs from the FDA, and is updated regularly.

What is Hydrea?

Hydrea has active ingredients of hydroxyurea. It is often used in polycythemia vera. eHealthMe is studying from 9,083 Hydrea users. Check the latest studies of Hydrea.

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 Jul, 05, 2026

17 people who take Hydrea and Viagra together, and have interactions are studied.

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

female:

Disorientation (disability in which the senses of time, direction, and recognition of people and places)
Ear discomfort
Headache (pain in head)
Metastases to bone (cancer spreads to bone)
Oedema (fluid collection in tissue)
Pain
Discomfort
Anhedonia (inability to experience pleasure from activities usually found enjoyable)
Anxiety
Bile duct stone

male:

Anaemia (lack of blood)
Bronchitis (inflammation of the mucous membrane in the bronchial tubes)
Malaise (a feeling of general discomfort or uneasiness)
Night sweats (sweating in night)
Red blood cell count decreased
Skin ulcer
White blood cell count decreased
Drug ineffective
Oedema (fluid collection in tissue)
Blood cholesterol increased

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

0-1:

n/a

2-9:

n/a

10-19:

Anhedonia (inability to experience pleasure from activities usually found enjoyable)
Anxiety
Cerebral artery thrombosis (clot formation in brain blood vessels)
Cerebrovascular accident (sudden death of some brain cells due to lack of oxygen when the blood flow to the brain is impaired by blockage or rupture)
Chest pain
Cholelithiasis (the presence or formation of gallstones in the gallbladder or bile ducts)
Dyspnoea (difficult or laboured respiration)
Emotional distress
Fear of disease
General physical health deterioration (weak health status)

20-29:

n/a

30-39:

Oedema (fluid collection in tissue)

40-49:

Bile duct stone

50-59:

Disorientation (disability in which the senses of time, direction, and recognition of people and places)
Ear discomfort
Headache (pain in head)
Metastases to bone (cancer spreads to bone)
Oedema (fluid collection in tissue)
Discomfort
Pain

60+:

Anaemia (lack of blood)
Bronchitis (inflammation of the mucous membrane in the bronchial tubes)
Malaise (a feeling of general discomfort or uneasiness)
Night sweats (sweating in night)
Red blood cell count decreased
Skin ulcer
White blood cell count decreased
Blood cholesterol increased
Death
Drug ineffective

What are the existing conditions these people have? *

Stress And Anxiety: 3 people, 17.65%
Essential Thrombocythaemia (chronic blood cancer): 3 people, 17.65%
Chronic Myeloid Leukaemia (long lasting type of cancer that starts in the blood-forming cells of the bone marrow and invades the blood): 3 people, 17.65%
Acute Myeloid Leukaemia (acute cancer in which the bone marrow makes abnormal myeloblasts): 2 people, 11.76%
Pain: 2 people, 11.76%
Nausea (feeling of having an urge to vomit): 2 people, 11.76%
Primary Pulmonary Hypertension (primary high blood pressure that affects the arteries in the lungs and the right side of your heart): 2 people, 11.76%
Cor Pulmonale Chronic (long lasting enlargement of the right ventricle of the heart): 1 person, 5.88%
Graft Versus Host Disease (the donated bone marrow or stem cells view the recipient's body as foreign, and the donated cells/bone marrow attack the body): 1 person, 5.88%
Cough: 1 person, 5.88%

* Approximation only. Some reports may have incomplete information.

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