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

Summary:

Drug interactions are reported among people who take Aricept (donepezil hydrochloride) and Viagra (sildenafil citrate). Common drug interactions include epistaxis among females and drug ineffective among males.

The phase IV clinical study analyzes what interactions people have when they take Aricept and Viagra. It is created by eHealthMe based on reports of 81 people who take the same drugs from the FDA, and is updated regularly.

What is Aricept?

Aricept has active ingredients of donepezil hydrochloride. It is often used in alzheimer's disease. eHealthMe is studying from 24,756 Aricept users. Check the latest studies of Aricept.

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 Aug, 10, 2026

81 people who take Aricept and Viagra together, and have interactions are studied.

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

female:

Epistaxis (bleed from the nose)
Aortic valve stenosis (narrowing of the aortic valve)
Pulmonary hypertension (increase in blood pressure in the lung artery)

male:

Drug ineffective
Nausea (feeling of having an urge to vomit)
Tremor (trembling or shaking movements in one or more parts of your body)
Disorientation (disability in which the senses of time, direction, and recognition of people and places)
Pain
Renal failure (kidney dysfunction)
Dizziness
Abdominal pain upper
Acute respiratory failure
Agitation (state of anxiety or nervous excitement)

What are the common drug interactions of Aricept and Viagra, 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:

Abdominal pain upper
Blood testosterone decreased
Brain oedema (excess accumulation of fluid in the intracellular or extracellular spaces of the brain)
Coma (state of unconsciousness lasting more than six hours)
Drug intolerance (drug sensitivity)
Hallucination (an experience involving the perception of something not present)
Headache (pain in head)
Hyperhidrosis (abnormally increased sweating)
Road traffic accident
Somnambulism (sleep walking)

50-59:

Protein total increased
Red blood cell count decreased
Autoimmune disorder (a condition in which the immune system attacks the body's normal substances and tissue)
Bilirubin conjugated increased
Cd4 lymphocytes increased
Faeces pale
Haematocrit decreased
Hepatic enzyme increased
Hepatic steatosis (fatty liver disease)
Red cell distribution width increased

60+:

Drug ineffective
Nausea (feeling of having an urge to vomit)
Pain in extremity
Dementia alzheimer's type (loss of mental ability with alzheimer's symptom)
Tremor (trembling or shaking movements in one or more parts of your body)
Accident
Anaemia (lack of blood)
Asthenia (weakness)
Blood alkaline phosphatase increased
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)

What are the existing conditions these people have? *

Dementia Alzheimer's Type (loss of mental ability with alzheimer's symptom): 11 people, 13.58%
Parkinson's Disease: 7 people, 8.64%
Pain: 7 people, 8.64%
Insomnia (sleeplessness): 7 people, 8.64%
High Blood Cholesterol: 7 people, 8.64%
Stress And Anxiety: 6 people, 7.41%
Multiple Sclerosis (a nervous system disease that affects your brain and spinal cord. it damages the myelin sheath): 6 people, 7.41%
Memory Loss: 6 people, 7.41%
High Blood Pressure: 6 people, 7.41%
Sleep Disorder: 5 people, 6.17%

* Approximation only. Some reports may have incomplete information.

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