Norvasc and Venous obstruction - a phase IV clinical study of FDA data

Summary:

Venous obstruction is reported as a side effect among people who take Norvasc (amlodipine besylate), especially for people who are female, 60+ old, also take Captopril,.

The phase IV clinical study analyzes which people have Venous obstruction when taking Norvasc. It is created by eHealthMe based on reports of 133,505 people who have side effects when taking Norvasc from the FDA, and is updated regularly.

What is Norvasc?

Norvasc has active ingredients of amlodipine besylate. It is often used in high blood pressure. eHealthMe is studying from 136,738 Norvasc users. Check the latest studies of Norvasc.

What is Venous obstruction?

Venous obstruction (venous blockage) is found to be associated with 17 drugs and 5 conditions by eHealthMe. Check the latest studies of Venous obstruction.

eHealthMe: drug outcomes in the real world

eHealthMe runs one of the largest post-marketing drug safety studies in the world. We study millions of patients and 5,000 more each day. Our data-driven phase IV clinical trials have been referenced on 800+ peer-reviewed medical publications including The Lancet, Mayo Clinic Proceedings, and Nature. Tools to study our phase IV findings are available to the public, anonymous and free >>>.

On Aug, 31, 2026

133,505 people reported to have side effects when taking Norvasc.
Among them, 55 people (0.04%) have Venous obstruction.

Among these 55 people:

What is the gender of people who have Venous obstruction when taking Norvasc? *

female: 64.81 %
male: 35.19 %

What is the age of people who have Venous obstruction when taking Norvasc? *

What are other drugs people take besides Norvasc? *

What are other side effects people have besides Venous obstruction? *

Heart Attack: 5 people, 9.09%
Chest Pain: 4 people, 7.27%
Hypertension Aggravated (high blood pressure): 3 people, 5.45%
Pain In Limb: 3 people, 5.45%
Oedema Lower Limb (fluid collection in tissue of lower leg): 3 people, 5.45%
Diabetes Mellitus Aggravated (serious diabetes): 2 people, 3.64%
Malaise (a feeling of general discomfort or uneasiness): 2 people, 3.64%
Weight Increased: 2 people, 3.64%
Rashes (redness): 1 person, 1.82%
Pulmonary Infarction (death of a small area of lung): 1 person, 1.82%

* Approximation only. Some reports may have incomplete information.

Do you take Norvasc and have Venous obstruction?

- Check whether Venous obstruction 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 Norvasc:

Norvasc (136,738 reports)

Browse all side effects of Norvasc:

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 Venous obstruction:

Venous obstruction (17 drugs)

Browse all the conditions that are associated with Venous obstruction:

Venous obstruction (5 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on amlodipine besylate (the active ingredients of Norvasc) and Norvasc (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.