Green Coffee Bean Extract
Also known as: Coffea arabica seed extract, GCBE, green coffee extract, chlorogenic acid extract, Svetol (branded extract)
Green coffee bean extract is made from unroasted coffee beans, which retain far more chlorogenic acid than roasted coffee. Commercial extracts are usually standardized to 50% chlorogenic acids and have most of the caffeine removed. It is a common weight-management and glucose-support ingredient, and dose-response meta-analyses of randomized trials have examined its effects on body weight and cardiometabolic markers. Effect sizes are modest and study quality is mixed.
Research summary
Chlorogenic acids studied for slowing glucose absorption and for effects on hepatic glucose output.
Dosage
Daily amounts, of extract.
| Lowest studied | Typical range | Highest studied | Upper limit |
|---|---|---|---|
| 200 mg | 200–400 mg | — | — |
Assumes a decaffeinated grade with about 2% residual caffeine; caffeine content varies by supplier from under 1% to over 10%, so confirm on the CoA and adjust the caffeine total. Typically taken before meals, once or twice daily.
Standardization: 50% chlorogenic acids
Source material: unroasted seed extract
Format suitability
- Capsule
- Powder
- Tablet
- Softgel
- Gummy
- Liquid
Bitter; not recommended in gummies.
Formulation notes
Small caffeine contribution; total with other stimulants. Chlorogenic acid is acidic and may affect pH of drink powders.
- Contains caffeine
Sources
- The effect of green-coffee extract supplementation on obesity: A systematic review and dose-response meta-analysis of randomized controlled trials. (Gorji Z 2019)PubMed
- The effect of green coffee extract supplementation on cardio metabolic risk factors: a systematic review and meta-analysis of randomized controlled trials. (Morvaridi M 2020)PubMed
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