Lopressor and Polymyositis - a phase IV clinical study of FDA data

Summary:

Polymyositis is reported as a side effect among people who take Lopressor (metoprolol tartrate), especially for people who are male, 60+ old, also take Hydrochlorothiazide, and have Constipation.

The phase IV clinical study analyzes which people have Polymyositis when taking Lopressor. It is created by eHealthMe based on reports of 32,072 people who have side effects when taking Lopressor from the FDA, and is updated regularly.

What is Lopressor?

Lopressor has active ingredients of metoprolol tartrate. It is often used in high blood pressure. eHealthMe is studying from 33,152 Lopressor users. Check the latest studies of Lopressor.

What is Polymyositis?

Polymyositis (inflammatory muscle disease that causes weakness of the skeletal muscles) is found to be associated with 246 drugs and 434 conditions by eHealthMe. Check the latest studies of Polymyositis.

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, 27, 2026

32,072 people reported to have side effects when taking Lopressor.
Among them, 16 people (0.05%) have Polymyositis.

Among these 16 people:

What is the gender of people who have Polymyositis when taking Lopressor? *

female: 40 %
male: 60 %

What is the age of people who have Polymyositis when taking Lopressor? *

What are other drugs people take besides Lopressor? *

What are other side effects people have besides Polymyositis? *

Blood Creatine Phosphokinase Increased: 11 people, 68.75%
Chest Pain: 7 people, 43.75%
Muscle Aches (muscle pain): 6 people, 37.50%
Blood Myoglobin Increased: 5 people, 31.25%
Aspartate Aminotransferase Increased: 5 people, 31.25%
Weakness: 5 people, 31.25%
Blood Glucose Increased: 3 people, 18.75%
Cardiac Failure Congestive: 3 people, 18.75%
Back Pain: 3 people, 18.75%
Anaemia (lack of blood): 3 people, 18.75%

What are the existing conditions these people have? *

High Blood Cholesterol: 2 people, 12.50%
Constipation: 2 people, 12.50%
Rheumatoid Arthritis (a chronic progressive disease causing inflammation in the joints): 1 person, 6.25%
Psoriatic Arthropathy (inflammation of the skin and joints with kin condition which typically causes patches (plaques) of red, scaly skin to develop): 1 person, 6.25%
Nausea (feeling of having an urge to vomit): 1 person, 6.25%
Muscle Aches (muscle pain): 1 person, 6.25%
Breast Cancer: 1 person, 6.25%

* Approximation only. Some reports may have incomplete information.

Do you take Lopressor and have Polymyositis?

- Check whether Polymyositis 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 Lopressor:

Lopressor (33,152 reports)

Polymyositis treatments and more:

Polymyositis (5,024 reports)

Browse all side effects of Lopressor:

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 Polymyositis:

Polymyositis (246 drugs)

Browse all the conditions that are associated with Polymyositis:

Polymyositis (434 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on metoprolol tartrate (the active ingredients of Lopressor) and Lopressor (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.