Metformin vs. Green tea extract: side effect and effectiveness comparison (a real world drug study)
Summary:
We compare the side effects and drug effectiveness of Metformin and Green tea extract. The phase IV clinical study is created by eHealthMe based on reports (from sources including the FDA) of 591,264 people who take Metformin and Green tea extract, and is updated regularly.
What is Metformin?
Metformin has active ingredients of metformin hydrochloride. It is often used in diabetes. eHealthMe is studying from 465,354 Metformin users. Check the latest studies of Metformin.
What is Green tea extract?
Green tea extract has active ingredients of green tea. It is often used in weight loss. eHealthMe is studying from 371 Green tea extract users. Check the latest studies of Green tea extract.
591,264 people who take Metformin and Green tea extract are studied.

Drugs being compared in this study:
- Metformin (metformin hydrochloride)
- Green Tea Extract (green tea)
Most common side effects of the drugs, overall:
Most common side effects of the drugs, in long term (1+ years) use:
Drug effectiveness:
Metformin:
- not at all: 2.7 %
- somewhat: 19.5 %
- moderate: 37.73 %
- high: 30.06 %
- very high: 10.02 %
Green Tea Extract:
- not at all: 3.2800000000000002 %
- somewhat: 24.59 %
- moderate: 47.54 %
- high: 18.03 %
- very high: 6.5600000000000005 %
Want to compare Metformin with Green tea extract?
- Personalize this study to your gender and age (0-99+)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.
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 .
Related studies
Alternative drugs to, pros and cons of:
- Metformin (453,942 reports)
- Green tea extract (311 reports)
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 zBrowse all side effects of Green tea extract:
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 zHow the study uses the data?
The study is based on metformin hydrochloride and green tea (the active ingredients of Metformin and Green tea extract, respectively). Other drugs that have the same active ingredients (e.g. generic drugs or brand names) are also considered. Dosage of drugs is not considered in the study.
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.
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