Chlorogenic Acid
Chlorogenic acid is a polyphenol found in coffee beans. Roasting reduces it, so concentrated extracts are made from unroasted green coffee beans.
Also listed as Coffee bean extract, Green coffee extract
What it is studied for
The strongest rated effects first. Bars show the size of the effect, the letter grades the evidence, and each rating lists the studies behind it.
What is chlorogenic acid?
Chlorogenic acid is a constituent of coffee beans. Roasting reduces its content, which is why unroasted, green coffee beans are used for concentrated extracts. These extracts also contain caffeine unless it has been removed. 1
Why study it for metabolism?
Researchers have proposed effects on glucose absorption and fat storage. Some supporting experiments used mice; a plausible pathway does not tell us how much weight a person will lose. Human trials need to answer that separately. 1
Why people take it
SuppCo community snapshot, 2026-09-28. Reasons for use are not evidence that it works.
Questions people ask
Is chlorogenic acid caffeine?
No. Green coffee contains both; decaffeinated extracts remove the stimulant while retaining other constituents. 1
Can the weight-loss result be expected from any capsule?
No. The pooled result concerns the extracts studied, and it does not identify a reliable effect for every preparation. 2
Is there a caffeine-free option?
Decaffeinated green-coffee extracts are available, according to NIH. 1
Does a lower blood-pressure reading prove fewer heart attacks?
The cited review evaluated blood pressure. Its findings do not establish prevention of heart attacks. 3
Related nutrients
Green Coffee ExtractSources
- Dietary Supplements for Weight Loss: Health Professional Fact Sheet NIH Office of Dietary Supplements