Metformin and Macular oedema - a phase IV clinical study of FDA data

Summary:

Macular oedema is reported as a side effect among people who take Metformin (metformin hydrochloride), especially for people who are male, 60+ old, have been taking the drug for 5 - 10 years also take Avandia, and have Diabetic retinal oedema.

The phase IV clinical study analyzes which people have Macular oedema when taking Metformin. It is created by eHealthMe based on reports of 453,860 people who have side effects when taking Metformin from the FDA, and is updated regularly.

What is Metformin?

Metformin has active ingredients of metformin hydrochloride. It is often used in diabetes. eHealthMe is studying from 465,355 Metformin users. Check the latest studies of Metformin.

What is Macular oedema?

Macular oedema (fluid and protein deposits collect on or under the macula of the eye (a yellow central area of the retina) and causes it to thicken) is found to be associated with 432 drugs and 861 conditions by eHealthMe. Check the latest studies of Macular oedema.

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, 24, 2026

453,860 people reported to have side effects when taking Metformin.
Among them, 290 people (0.06%) have Macular oedema.

Among these 290 people:

* Approximation only. Some reports may have incomplete information.

Do you take Metformin and have Macular oedema?

- Check whether Macular oedema 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 Metformin:

Metformin (465,355 reports)

Macular oedema treatments and more:

Macular oedema (10,661 reports)

How severe was Macular oedema and when was it recovered:

Macular oedema in Metformin

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

Macular oedema and drugs with ingredients of metformin hydrochloride (353 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 Metformin:

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 Macular oedema:

Macular oedema (432 drugs)

Browse all the conditions that are associated with Macular oedema:

Macular oedema (861 conditions)

Related publications that referenced our studies

T.Audi Yanto, I.Huang, F.Nathania Kosasih, NP Hardjo Lugito, "Nightmare and Abnormal Dreams: Rare Side Effects of Metformin?", Case Reports in Endocrinology, 2018 Jan .
Al-Hamdy RA, "Assessment of electrolytes and HbA1c in type 2 diabetic patients using metformin and evaluation of guidelines obedience regarding renal impairment", J.Thi-Qar Sci., 2015 Jan .
Wiwanitkit S, Wiwanitkit V, "Metformin and sleep disorders", Indian journal of endocrinology and metabolism, 2012 Jan .
T.Audi Yanto, I.Huang, F.Nathania Kosasih, NP Hardjo Lugito, "Nightmare and Abnormal Dreams: Rare Side Effects of Metformin?", Case Reports in Endocrinology, 2018 Jan .
Al-Hamdy RA, "Assessment of electrolytes and HbA1c in type 2 diabetic patients using metformin and evaluation of guidelines obedience regarding renal impairment", J.Thi-Qar Sci., 2015 Jan .
Wiwanitkit S, Wiwanitkit V, "Metformin and sleep disorders", Indian journal of endocrinology and metabolism, 2012 Jan .

How the study uses the data?

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