Weight loss

Green coffee bean

Also called: chlorogenic acid, green coffee extract

Extract of unroasted coffee beans.

Why people take it
Weight loss.
What the evidence says
The main positive study was withdrawn; evidence is poor.
How it is usually taken
Usually 200 to 400 mg of extract a day; contains caffeine.
Be careful
Contains caffeine.
Medicines it can interact with
As for caffeine.

Other weight loss

Garcinia cambogiaRaspberry ketonesForskolinOrlistat (OTC)White kidney bean extractCapsaicinKeto pillsSemaglutide (not a supplement)

Common questions

What is Green coffee bean?

Extract of unroasted coffee beans.

Why do people take Green coffee bean?

Weight loss.

Does Green coffee bean work?

The main positive study was withdrawn; evidence is poor.

How much Green coffee bean do people take?

Usually 200 to 400 mg of extract a day; contains caffeine.

Is Green coffee bean safe?

Contains caffeine.

Does Green coffee bean interact with medicines?

As for caffeine.

Sources and further reading

Last reviewed 31 October 2026. Written by Satya Babu.

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For information only, not medical advice. Supplements are not medicines: they are not tested and approved like drugs before they are sold, and they can interact with medicines. Talk to your doctor or pharmacist before you start one, especially if you are pregnant or breastfeeding, take regular medicines, or have kidney, liver or heart disease.