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

Summary:

Drug interactions are reported among people who take Viagra (sildenafil citrate) and Quinine sulfate (quinine sulfate). Common drug interactions include pulmonary hypertension among females and depression among males.

The phase IV clinical study analyzes what interactions people have when they take Viagra and Quinine sulfate. It is created by eHealthMe based on reports of 58 people who take the same drugs from the FDA, and is updated regularly.

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.

What is Quinine sulfate?

Quinine sulfate has active ingredients of quinine sulfate. It is often used in leg pain. eHealthMe is studying from 5,078 Quinine sulfate users. Check the latest studies of Quinine sulfate.

On May, 03, 2026

58 people who take Viagra and Quinine sulfate together, and have interactions are studied.

Viagra and Quinine sulfate drug interactions.

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

female:

Pulmonary hypertension (increase in blood pressure in the lung artery)
Accident
Affective disorder (mental disorder)
Agranulocytosis (a deficiency of granulocytes in the blood, causing increased vulnerability to infection)
Anaemia (lack of blood)
Anxiety
Aortic stenosis (obstruction to the outflow of blood from the left ventricle into the aorta)
Aortic valve incompetence
Aortic valve stenosis (narrowing of the aortic valve)
Arteriosclerosis coronary artery (thickening and hardening of arteries- coronary artery)

male:

Depression
Drug ineffective
Cataract (clouding of the lens inside the eye)
Haematuria (presence of blood in urine)
Hypersomnia (excessive daytime sleepiness (eds))
Malaise (a feeling of general discomfort or uneasiness)
Mental disorder (a psychological term for a mental or behavioural pattern or anomaly that causes distress or disability)
Metastases to bone (cancer spreads to bone)
Metastases to skin (cancer spreads to skin)
Osteoporosis (bones weak and more likely to break)

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

0-1:

Activities of daily living impaired
Anhedonia (inability to experience pleasure from activities usually found enjoyable)
Anxiety
Balance disorder
Bronchitis (inflammation of the mucous membrane in the bronchial tubes)
Extrapyramidal disorder (involuntary muscle spasms in the face and neck)
Injury
Muscle spasms (muscle contraction)
Myoclonus (a brief, involuntary twitching of a muscle or a group of muscles)
Neuropathy peripheral (surface nerve damage)

2-9:

n/a

10-19:

n/a

20-29:

n/a

30-39:

Accident
Affective disorder (mental disorder)
Agranulocytosis (a deficiency of granulocytes in the blood, causing increased vulnerability to infection)
Anaemia (lack of blood)
Anxiety
Aortic stenosis (obstruction to the outflow of blood from the left ventricle into the aorta)
Aortic valve incompetence
Arteriosclerosis coronary artery (thickening and hardening of arteries- coronary artery)
Arthralgia (joint pain)
Arthritis (form of joint disorder that involves inflammation of one or more joints)

40-49:

Blood cholesterol increased
Blood triglycerides increased
Carpal tunnel decompression
Drug effect decreased
Nerve compression
Osteoarthritis (a joint disease caused by cartilage loss in a joint)
Pain
Surgery
T-cell lymphoma (a blood cell cancer)

50-59:

Nausea (feeling of having an urge to vomit)
Arthralgia (joint pain)
Arthropathy
Bronchitis (inflammation of the mucous membrane in the bronchial tubes)
Cardiac failure congestive
Cough
Deep vein thrombosis (blood clot in a major vein that usually develops in the legs and/or pelvis)
Drug ineffective
Migraine (headache)
Psychotic disorder

60+:

Anaemia (lack of blood)
Chest pain
Hypersomnia (excessive daytime sleepiness (eds))
Malaise (a feeling of general discomfort or uneasiness)
Mental disorder (a psychological term for a mental or behavioural pattern or anomaly that causes distress or disability)
Metastases to bone (cancer spreads to bone)
Metastases to skin (cancer spreads to skin)
Osteoporosis (bones weak and more likely to break)
Pain
Renal impairment (severely reduced kidney function)

What are the existing conditions these people have? *

Gastroesophageal Reflux Disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 11 people, 18.97%
Muscle Spasms (muscle contraction): 5 people, 8.62%
High Blood Cholesterol: 5 people, 8.62%
Pain: 4 people, 6.90%
High Blood Pressure: 4 people, 6.90%
Diabetes: 4 people, 6.90%
Type 2 Diabetes: 3 people, 5.17%
Restless Leg Syndrome (a powerful urge to move your legs): 3 people, 5.17%
Primary Pulmonary Hypertension (primary high blood pressure that affects the arteries in the lungs and the right side of your heart): 3 people, 5.17%
Narcolepsy (brain's inability to regulate sleep-wake cycles normally): 3 people, 5.17%

* Approximation only. Some reports may have incomplete information.

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