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

Summary:

Drug interactions are reported among people who take Zestoretic (hydrochlorothiazide; lisinopril) and Viagra (sildenafil citrate). Common drug interactions include drug ineffective among males.

The phase IV clinical study analyzes what interactions people have when they take Zestoretic and Viagra. It is created by eHealthMe based on reports of 83 people who take the same drugs from the FDA, and is updated regularly.

What is Zestoretic?

Zestoretic has active ingredients of hydrochlorothiazide; lisinopril. It is often used in high blood pressure. eHealthMe is studying from 4,342 Zestoretic users. Check the latest studies of Zestoretic.

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, 03, 2026

83 people who take Zestoretic and Viagra together, and have interactions are studied.

Zestoretic and Viagra drug interactions.

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

female:

n/a

male:

  1. Drug ineffective
  2. Renal failure acute (rapid kidney dysfunction)
  3. Weight increased
  4. Acute myocardial infarction (acute heart attack)
  5. Angina pectoris (chest pain due to ischemia of the heart muscle)
  6. Arthralgia (joint pain)
  7. Blood glucose increased
  8. Bradycardia (abnormally slow heart action)
  9. 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)
  10. Deep vein thrombosis (blood clot in a major vein that usually develops in the legs and/or pelvis)

What are the common drug interactions of Zestoretic 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:

  1. Oedema peripheral (superficial swelling)
  2. Weight increased
  3. Angioplasty
  4. Arterial occlusive disease (slow process through which arteries throughout the body become progressively narrowed and eventually completely blocked)
  5. Arteriosclerosis coronary artery (thickening and hardening of arteries- coronary artery)
  6. Cardiac disorder
  7. Death
  8. Drug effect decreased
  9. Facial pain
  10. Hospitalisation

50-59:

  1. Drug ineffective
  2. Drug toxicity
  3. Haematocrit decreased
  4. Haemoglobin decreased
  5. Hyporeflexia (a condition of below normal or absent reflexes)
  6. Ischaemia (insufficient supply of blood to an organ, usually due to a blocked artery)
  7. Limb discomfort (discomfort in leg)
  8. Muscle injury
  9. Muscle necrosis (muscle cell damage)
  10. Muscle strain (an injury to a muscle in which the muscle fibres tear)

60+:

  1. Drug ineffective
  2. Renal failure acute (rapid kidney dysfunction)
  3. Dyspnoea (difficult or laboured respiration)
  4. Myocardial infarction (destruction of heart tissue resulting from obstruction of the blood supply to the heart muscle)
  5. Nausea (feeling of having an urge to vomit)
  6. Pain
  7. Chronic kidney disease
  8. Diarrhoea
  9. Lung infiltration (a substance that normally includes fluid, inflammatory exudates or cells that fill a region of lung)
  10. Pyrexia (fever)

What are the existing conditions these people have? *

  1. Type 2 Diabetes: 8 people, 9.64%
  2. High Blood Cholesterol: 8 people, 9.64%
  3. Hyperlipidaemia (presence of excess lipids in the blood): 6 people, 7.23%
  4. Gastroesophageal Reflux Disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 5 people, 6.02%

* Approximation only. Some reports may have incomplete information.

Do you take Zestoretic and Viagra?

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Related studies:

Effectiveness of, side effects of, and alternative drugs to the 2 drugs:

Browse all drug interactions of Zestoretic and Viagra:

a b c d e f g h i j k l m n o p q r s t u v w x y z

Sub-studies by gender and age:

Female: 0-1 2-9 10-19 20-29 30-39 40-49 50-59 60+

Male: 0-1 2-9 10-19 20-29 30-39 40-49 50-59 60+

Browse all side effects of Zestoretic:

a b c d e f g h i j k l m n o p q r s t u v w x y z

Browse all side effects of Viagra:

a b c d e f g h i j k l m n o p q r s t u v w x y z

Browse all interactions between Zestoretic and drugs from A to Z:

a b c d e f g h i j k l m n o p q r s t u v w x y z

Browse all interactions between Viagra and drugs from A to Z:

a b c d e f g h i j k l m n o p q r s t u v w x y z

Related publications that referenced our studies


How the study uses the data?

The study uses data from the FDA. It is based on hydrochlorothiazide; lisinopril and sildenafil citrate (the active ingredients of Zestoretic and Viagra, respectively), and Zestoretic and Viagra (the brand names). Other drugs that have the same active ingredients (e.g. generic drugs) are not considered. Dosage of drugs is not considered in the study.

How to use the study?

DO NOT STOP MEDICATIONS without first consulting your doctor. If there are any serious or long term adverse effects discovered in the study, discuss the study with your doctor to ensure that proper medication management will be in place if applicable.

Who is eHealthMe?

With medical big data and proven AI/ML algorithms, eHealthMe provides a platform for everyone to run phase IV clinical trials. We study millions of patients and 5,000 more each day. Results of our real-world drug study have been referenced on 800+ peer-reviewed medical publications, including The Lancet, Mayo Clinic Proceedings, and Nature. Our analysis results are available to researchers, health care professionals, patients (testimonials), and software developers (open API).

WARNING, DISCLAIMER, USE FOR PUBLICATION

WARNING: Please DO NOT STOP MEDICATIONS without first consulting a physician since doing so could be hazardous to your health.

DISCLAIMER: All material available on eHealthMe.com is for informational purposes only, and is not a substitute for medical advice, diagnosis, or treatment provided by a qualified healthcare provider. All information is observation-only. Our phase IV clinical studies alone cannot establish cause-effect relationship. Different individuals may respond to medication in different ways. Every effort has been made to ensure that all information is accurate, up-to-date, and complete, but no guarantee is made to that effect. The use of the eHealthMe site and its content is at your own risk.

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