Lopressor and Activated partial thromboplastin time prolonged - a phase IV clinical study of FDA data

Summary:

Activated partial thromboplastin time prolonged is reported as a side effect among people who take Lopressor (metoprolol tartrate), especially for people who are male, 60+ old, also take Coumadin, and have Dyslipidaemia.

The phase IV clinical study analyzes which people have Activated partial thromboplastin time prolonged 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 Activated partial thromboplastin time prolonged?

Activated partial thromboplastin time prolonged is found to be associated with 760 drugs and 1,211 conditions by eHealthMe. Check the latest studies of Activated partial thromboplastin time prolonged.

On Aug, 06, 2026

32,072 people reported to have side effects when taking Lopressor.
Among them, 60 people (0.19%) have Activated partial thromboplastin time prolonged.

Could Lopressor cause Activated partial thromboplastin time prolonged?

Among these 60 people:

What is the gender of people who have Activated partial thromboplastin time prolonged when taking Lopressor? *

female: 36.67 %
male: 63.33 %

What is the age of people who have Activated partial thromboplastin time prolonged when taking Lopressor? *

What are other drugs people take besides Lopressor? *

What are other side effects people have besides Activated partial thromboplastin time prolonged? *

Haemoglobin Decreased: 25 people, 41.67%
International Normalised Ratio Increased: 21 people, 35.00%
Haematocrit Decreased: 17 people, 28.33%
Thrombocytopenia (decrease of platelets in blood): 16 people, 26.67%
Blood Urea Increased: 13 people, 21.67%
Hypotension (abnormally low blood pressure): 11 people, 18.33%
Acute Kidney Failure: 10 people, 16.67%
Cardiac Failure Congestive: 10 people, 16.67%
Blood Bilirubin Increased: 9 people, 15.00%
White Blood Cell Count Increased: 9 people, 15.00%

What are the existing conditions these people have? *

Wheezing (a high-pitched whistling sound made while you breath): 2 people, 3.33%
Sepsis (a severe blood infection that can lead to organ failure and death): 2 people, 3.33%
Pain: 2 people, 3.33%
Multiple Sclerosis Relapse (reoccurrence of a nervous system disease that affects your brain and spinal cord. it damages the myelin sheath): 2 people, 3.33%
Multiple Sclerosis (a nervous system disease that affects your brain and spinal cord. it damages the myelin sheath): 2 people, 3.33%
Cardiac Failure Congestive: 2 people, 3.33%
Heparin-Induced Thrombocytopenia: 2 people, 3.33%
Stroke (sudden death of a portion of the brain cells due to a lack of oxygen): 2 people, 3.33%
Graft Versus Host Disease (the donated bone marrow or stem cells view the recipient's body as foreign, and the donated cells/bone marrow attack the body): 2 people, 3.33%
Dyslipidaemia (abnormal amount of lipids): 2 people, 3.33%

* Approximation only. Some reports may have incomplete information.

Do you take Lopressor and have Activated partial thromboplastin time prolonged?

- Check whether Activated partial thromboplastin time prolonged 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)

Activated partial thromboplastin time prolonged treatments and more:

Activated partial thromboplastin time prolonged (8,799 reports)

How severe was Activated partial thromboplastin time prolonged and when was it recovered:

Activated partial thromboplastin time prolonged in Lopressor

Expand to all the drugs that have ingredients of metoprolol tartrate:

Activated partial thromboplastin time prolonged and drugs with ingredients of metoprolol tartrate (385 reports)

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 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 Activated partial thromboplastin time prolonged:

Activated partial thromboplastin time prolonged (760 drugs)

Browse all the conditions that are associated with Activated partial thromboplastin time prolonged:

Activated partial thromboplastin time prolonged (1,211 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.