Calan and Hypotension - a phase IV clinical study of FDA data


Hypotension is found among people who take Calan, especially for people who are female, 60+ old.

The phase IV clinical study analyzes which people take Calan and have Hypotension. It is created by eHealthMe based on reports of 3,710 people who have side effects when taking Calan from the FDA, and is updated regularly. You can use the study as a second opinion to make health care decisions.

Phase IV trials are used to detect adverse drug outcomes and monitor drug effectiveness in the real world. With medical big data and AI algorithms, eHealthMe is running millions of phase IV trials and makes the results available to the public. Our original studies have been referenced on 600+ medical publications including The Lancet, Mayo Clinic Proceedings, and Nature.

On Sep, 30, 2022

3,710 people reported to have side effects when taking Calan.
Among them, 149 people (4.02%) have Hypotension.

What is Calan?

Calan has active ingredients of verapamil hydrochloride. It is often used in high blood pressure. eHealthMe is studying from 3,834 Calan users for its effectiveness, alternative drugs and more.

What is Hypotension?

Hypotension (abnormally low blood pressure) is found to be associated with 4,120 drugs and 4,547 conditions by eHealthMe.

Number of Calan and Hypotension reports submitted per year:

Could Calan cause Hypotension?

Gender of people who have Hypotension when taking Calan*:

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Age of people who have Hypotension when taking Calan *:

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Common drugs people take besides Calan *:

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Common side effects people have besides Hypotension *:

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Common conditions people have *:

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* Approximation only. Some reports may have incomplete information.

Do you take Calan and have Hypotension?

Check whether Hypotension is associated with a drug or a condition

How to use the study?

You can discuss the study with your doctor, to ensure that all drug risks and benefits are fully discussed and understood.

Related studies

How severe was Hypotension and when was it recovered:

Expand to all the drugs that have ingredients of verapamil hydrochloride:

Alternative drugs to, pros and cons of Calan:

Common Calan side effects:

Browse all side effects of Calan:

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Hypotension treatments and more:

COVID vaccines that are related to Hypotension:

Common drugs associated with Hypotension:

All the drugs that are associated with Hypotension:

Common conditions associated with Hypotension:

All the conditions that are associated with Hypotension:

How the study uses the data?

The study uses data from the FDA. It is based on verapamil hydrochloride (the active ingredients of Calan) and Calan (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.

Who is eHealthMe?

With medical big data and proven AI 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 600+ 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: Please DO NOT STOP MEDICATIONS without first consulting a physician since doing so could be hazardous to your health.

DISCLAIMER: All material available on 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.

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