Novalgin and Haematemesis - a phase IV clinical study of FDA data

Summary:

Haematemesis is reported as a side effect among people who take Novalgin (metamizole), especially for people who are female, 60+ old, have been taking the drug for < 1 month also take Pantoprazole, and have Constipation.

The phase IV clinical study analyzes which people have Haematemesis when taking Novalgin. It is created by eHealthMe based on reports of 10,087 people who have side effects when taking Novalgin from the FDA, and is updated regularly.

What is Novalgin?

Novalgin has active ingredients of metamizole. It is often used in pain. eHealthMe is studying from 10,177 Novalgin users. Check the latest studies of Novalgin.

What is Haematemesis?

Haematemesis (vomiting of blood) is found to be associated with 1,446 drugs and 2,238 conditions by eHealthMe. Check the latest studies of Haematemesis.

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 Sep, 03, 2026

10,087 people reported to have side effects when taking Novalgin.
Among them, 39 people (0.39%) have Haematemesis.

Among these 39 people:

How long have people been on Novalgin when they have Haematemesis? *

What is the gender of people who have Haematemesis when taking Novalgin? *

female: 75 %
male: 25 %

What is the age of people who have Haematemesis when taking Novalgin? *

What are other drugs people take besides Novalgin? *

What are other side effects people have besides Haematemesis? *

Nausea And Vomiting: 10 people, 25.64%
Thrombocytopenia (decrease of platelets in blood): 9 people, 23.08%
Melaena (the passage of black, tarry stools): 8 people, 20.51%
Haemoglobin Decreased: 7 people, 17.95%
Colitis (inflammation of colon): 6 people, 15.38%
Gastrointestinal Haemorrhage (bleeding gastrointestinal tract): 6 people, 15.38%
Gastritis (inflammation of stomach): 5 people, 12.82%
Agranulocytosis (a deficiency of granulocytes in the blood, causing increased vulnerability to infection): 5 people, 12.82%
Nausea (feeling of having an urge to vomit): 5 people, 12.82%
General Physical Health Deterioration (weak health status): 5 people, 12.82%

What are the existing conditions these people have? *

High Blood Pressure: 7 people, 17.95%
Constipation: 7 people, 17.95%
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): 5 people, 12.82%
Cardiac Failure: 5 people, 12.82%
Cholecystitis (infection of gallbladder): 4 people, 10.26%
Primary Myelofibrosis (primary disorder of the bone marrow): 4 people, 10.26%
Chronic Obstructive Pulmonary Disease (a progressive disease that makes it hard to breathe): 4 people, 10.26%
Hypokalemia (low potassium): 3 people, 7.69%
Hyperphosphataemia (electrolyte disturbance in which there is an abnormally elevated level of phosphate in the blood): 2 people, 5.13%
Pulmonary Embolism (blockage of the main artery of the lung): 2 people, 5.13%

* Approximation only. Some reports may have incomplete information.

Do you take Novalgin and have Haematemesis?

- Check whether Haematemesis 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 Novalgin:

Novalgin (10,177 reports)

Haematemesis treatments and more:

Haematemesis (33,968 reports)

Browse all side effects of Novalgin:

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 Haematemesis:

Haematemesis (1,446 drugs)

Browse all the conditions that are associated with Haematemesis:

Haematemesis (2,238 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on metamizole (the active ingredients of Novalgin) and Novalgin (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.