Green Coffee Bean Extract

Green coffee extract · Green coffee bean · Unroasted coffee bean

Snapshot

Indications	Contraindications
Body weight and body mass index^{1, 2} Waist circumference¹ Fasting glucose³ Blood pressure^{4, 5} Total cholesterol⁴ Triglycerides and HDL cholesterol⁶ Tumor necrosis factor-alpha⁷	Pregnancy⁸ Under age 18⁹

Green coffee bean extract is made from unroasted coffee beans and is rich in chlorogenic acids, which are thought to influence glucose and lipid metabolism¹⁰. It is taken for weight management, blood pressure, and glycemic and lipid control, most often by overweight or obese adults with features of metabolic syndrome.

Meta-analyses of randomized trials found reductions in body weight, body mass index, and waist circumference¹, with larger effects in participants who were overweight at baseline. Pooled analyses also found lower fasting glucose and lower blood pressure⁴. A crossover trial of a combined olive leaf, green coffee, and beetroot supplement found no blood pressure effect¹¹. Products list green coffee bean extract mostly as capsules; see Form comparison.

Health Canada lists pregnancy as a contraindication on most licensed single-ingredient products⁸ and asks breastfeeding users to consult a health care practitioner first⁸. Raw green coffee bean dust is a documented occupational allergen in workers handling beans¹².

Last updated October 16, 2026. Read how we make monographs.

In the full monograph

53 sources, 42 studies

When to useThe situations practitioners use it for, each with the reason and the study behind it.
SafetyWho should avoid it, who needs extra care, and the side effects reported in studies.
InteractionsThe medicines and supplements it interacts with, the effect of each, and what labeling says to watch.
Protocol notesThe doses used in studies, how and when they were taken, and how the forms on the market compare.
How it worksWhat it is and how it works in the body, in plain terms.
Published studiesThe studies behind each use, popular claims checked against them, and trials still under way.
Word of mouthWhat patients and practitioners report online, kept separate from the clinical evidence.
Clinical perspectiveA closing read of where the evidence is solid, where it is thin, and what has not been studied.

Snapshot

In the full monograph

Sources