Ferrous fumarate and Ocular hyperaemia - a phase IV clinical study of FDA data

Summary:

Ocular hyperaemia is reported as a side effect among people who take Ferrous fumarate (ferrous fumarate), especially for people who are female, 60+ old, also take Clopidogrel, and have Breast cancer female.

The phase IV clinical study analyzes which people have Ocular hyperaemia when taking Ferrous fumarate. It is created by eHealthMe based on reports of 9,374 people who have side effects when taking Ferrous fumarate from the FDA, and is updated regularly.

What is Ferrous fumarate?

Ferrous fumarate has active ingredients of ferrous fumarate. It is often used in anemia. eHealthMe is studying from 9,840 Ferrous fumarate users. Check the latest studies of Ferrous fumarate.

What is Ocular hyperaemia?

Ocular hyperaemia (an abnormally large amount of blood in eye) is found to be associated with 1,354 drugs and 1,500 conditions by eHealthMe. Check the latest studies of Ocular hyperaemia.

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, 16, 2026

9,374 people reported to have side effects when taking Ferrous fumarate.
Among them, 13 people (0.14%) have Ocular hyperaemia.

Could Ferrous fumarate cause Ocular hyperaemia?

Among these 13 people:

What is the gender of people who have Ocular hyperaemia when taking Ferrous fumarate? *

female: 84.62 %
male: 15.38 %

What is the age of people who have Ocular hyperaemia when taking Ferrous fumarate? *

What are other drugs people take besides Ferrous fumarate? *

What are other side effects people have besides Ocular hyperaemia? *

Eye Pain: 9 people, 69.23%
Corneal Disorder: 6 people, 46.15%
Ulcerative Keratitis (ulcerative inflammation of the cornea): 6 people, 46.15%
Corneal Dystrophy (abnormal deposition of substances in the transparent front part of the eye): 6 people, 46.15%
Lacrimation Increased: 4 people, 30.77%
Visual Impairment: 4 people, 30.77%
Taste - Impaired: 3 people, 23.08%
Skin Blushing/flushing (a sudden reddening of the face, neck): 3 people, 23.08%
Heart Palpitations (feelings or sensations that your heart is pounding or racing): 3 people, 23.08%
Corneal Thinning: 3 people, 23.08%

What are the existing conditions these people have? *

Breast Cancer Female: 2 people, 15.38%
Neurotrophic Keratopathy (decreased corneal sensitivity and poor corneal healing): 1 person, 7.69%
Crohn's Disease (a condition that causes inflammation of the gastrointestinal tract): 1 person, 7.69%
Chronic Myeloid Leukaemia (long lasting type of cancer that starts in the blood-forming cells of the bone marrow and invades the blood): 1 person, 7.69%
Chronic Lymphocytic Leukaemia (cancer in which the bone marrow makes too many lymphocytes (a type of white blood cell)): 1 person, 7.69%
Breast Cancer: 1 person, 7.69%

* Approximation only. Some reports may have incomplete information.

Do you take Ferrous fumarate and have Ocular hyperaemia?

- Check whether Ocular hyperaemia 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 Ferrous fumarate:

Ferrous fumarate (9,840 reports)

Browse all side effects of Ferrous fumarate:

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 Ocular hyperaemia:

Ocular hyperaemia (1,354 drugs)

Browse all the conditions that are associated with Ocular hyperaemia:

Ocular hyperaemia (1,500 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on ferrous fumarate (the active ingredients of Ferrous fumarate) and Ferrous fumarate (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.