Viagra and Thyroid cancer - a phase IV clinical study of FDA data

Summary:

Thyroid cancer is reported as a side effect among people who take Viagra (sildenafil citrate), especially for people who are male, 60+ old, also take Aspirin, and have High blood cholesterol.

The phase IV clinical study analyzes which people have Thyroid cancer when taking Viagra. It is created by eHealthMe based on reports of 61,803 people who have side effects when taking Viagra 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 Thyroid cancer?

Thyroid cancer is found to be associated with 592 drugs and 841 conditions by eHealthMe. Check the latest studies of Thyroid cancer.

On Jul, 26, 2026

61,803 people reported to have side effects when taking Viagra.
Among them, 13 people (0.02%) have Thyroid cancer.

Among these 13 people:

What is the gender of people who have Thyroid cancer when taking Viagra? *

female: 0.0 %
male: 100 %

What is the age of people who have Thyroid cancer when taking Viagra? *

What are other drugs people take besides Viagra? *

What are other side effects people have besides Thyroid cancer? *

Colonic Polyp (extra part of colon tissue grow in intestine): 12 people, 92.31%
Diverticulum (out pouching of a hollow (or a fluid-filled) structure in the body): 12 people, 92.31%
Weight Decreased: 10 people, 76.92%
Coughing Up Blood: 10 people, 76.92%
Depression: 10 people, 76.92%
Drug Hypersensitivity: 10 people, 76.92%
Enlarged Prostate: 10 people, 76.92%
Fall: 10 people, 76.92%
Fistula (an abnormal connection or passageway between two): 10 people, 76.92%
Fungal Nail Infection: 10 people, 76.92%

What are the existing conditions these people have? *

Prostate Cancer: 10 people, 76.92%
Osteoporosis (bones weak and more likely to break): 10 people, 76.92%
High Blood Cholesterol: 10 people, 76.92%
Eczema (patches of skin become rough and inflamed, with itching and bleeding blisters): 2 people, 15.38%
Atrial Fibrillation/flutter (atrial fibrillation and flutter are abnormal heart rhythms in which the atria, or upper chambers of the heart, are out of sync with the ventricles): 1 person, 7.69%

* Approximation only. Some reports may have incomplete information.

Do you take Viagra and have Thyroid cancer?

- Check whether Thyroid cancer is associated with a drug or a condition
- Predict drug outcomes for up to one year with AI
- Get an AI agent to monitor your drugs continuously

Related studies:

Effectiveness of, long term effects of, and alternative drugs to Viagra:

Viagra (63,865 reports)

Thyroid cancer treatments and more:

Thyroid cancer (24,393 reports)

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 the drugs that are associated with Thyroid cancer:

Thyroid cancer (592 drugs)

Browse all the conditions that are associated with Thyroid cancer:

Thyroid cancer (841 conditions)

Related publications that referenced our studies

Jeong SY, Jeon SJ, Kim YR, Choi SS, Kwak HS, "A Rare Case of Viagra Induced Toxic Encephalopathy", Investigative Magnetic Resonance Imaging, 2016 Sep .
Jeong SY, Jeon SJ, Kim YR, Choi SS, Kwak HS, "A Rare Case of Viagra Induced Toxic Encephalopathy", Investigative Magnetic Resonance Imaging, 2016 Sep .

How the study uses the data?

The study uses data from the FDA. It is based on sildenafil citrate (the active ingredients of Viagra) and Viagra (the brand name). 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.

If you use this eHealthMe study on publication, please acknowledge it with a citation: study title, URL, accessed date.