Green Coffee Bean Extract
Coffea arabica / Coffea canephora (unroasted)
Also known as: green coffee extract, chlorogenic acid extract, GCE, unroasted coffee extract
This ingredient is classified as unclassified risk (GIRI score: 4.0/10).
Safety Profile
Known Safety Concerns
- Contains caffeine -- cardiovascular effects, anxiety, insomnia
- FTC enforcement action against green coffee weight-loss claims
- May lower blood pressure and blood sugar additively with medications
- Chlorogenic acid may affect homocysteine metabolism with long-term use
Contraindications
- Contains caffeine -- cardiovascular effects, anxiety, insomnia
- FTC enforcement action against green coffee weight-loss claims
Interactions
Information not yet available for this ingredient profile.
Evidence and Scientific Findings
Ingredient Overview
Green coffee bean extract contains chlorogenic acids and caffeine from unroasted coffee beans. Marketed for weight loss and blood sugar management. The FTC took action against the manufacturer of a widely marketed green coffee extract product for making unsupported weight-loss claims. Contains caffeine — all caffeine adverse effects apply. May lower blood pressure and blood sugar additively with medications.
Biological and Chemical Classification
- Scientific Name
- Coffea arabica / Coffea canephora (unroasted)
Mechanism of Action
Information not yet available for this ingredient profile.
Clinical Evidence of Effectiveness
Information not yet available for this ingredient profile.
Pharmacokinetics
Information not yet available for this ingredient profile.
Recommended Dosage
Information not yet available for this ingredient profile.
SETI — Scientific Evidence Transparency Index
Executive Summary — Ingredient Assessment
- 10 studies reviewed
- 0 high-quality studies (meta-analysis or RCT)
- Main clinical benefit observed: Stimulant
- Evidence consistency: High consistency across studies (100%)
- Contains caffeine -- cardiovascular effects, anxiety, insomnia
- FTC enforcement action against green coffee weight-loss claims
- May lower blood pressure and blood sugar additively with medications
- Chlorogenic acid may affect homocysteine metabolism with long-term use
The available scientific evidence for Green Coffee Bean Extract indicates notable safety signals that warrant caution. Use should be considered carefully and monitored, particularly in sensitive populations or alongside other medications.
Total SETI Score
High risk| Evidence quality | 10/40 |
| Evidence consistency | 20/20 |
| Safety signals | 0/20 |
| Study recency | 10/10 |
| Evidence transparency | 10/10 |
Evidence Summary
- 10 studies reviewed
- 0 high-quality studies (meta-analysis or systematic review)
- 0 studies identified benefits or no safety concern (GREEN)
- 10 studies reported limited or advisory safety evidence (YELLOW)
Evidence Policy
Only peer-reviewed scientific literature indexed in PubMed or comparable databases is included in this evaluation. Commercial websites, blogs, and marketing materials are excluded. All references include direct traceable links to source documents.
Last updated: 24 მარ 2026, 08:44
Evidence Distribution
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Observational / other LOW evidence YELLOWNeurocafu2122, A green coffee bean extract containing eicosanoyl-5-hydroxytryptamide and chlorogenic acids enhances cognitive function and neuronal plasticity in a scopolamine-induced amnesia mouse… ↗Venkatakrishna K et al.. Neurocafu2122, A green coffee bean extract containing eicosanoyl-5-hydroxytryptamide and chlorogenic acids enhances cognitive function and neuronal plasticity in a scopolamine-induced amnesia mouse model.. Metab Brain Dis. 2026. PMID:41533228.PMID 41533228 ↗Journal Metab Brain DisYear 2026Study type Observational / otherEvidence strength LOW evidencePubMed link https://pubmed.ncbi.nlm.nih.gov/41533228/
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Observational / other LOW evidence YELLOWChitosan/pectin nanoparticles encapsulating green coffee bean extract as a novel non-invasive therapy for dry eye disease. ↗Fahmi SI et al.. Chitosan/pectin nanoparticles encapsulating green coffee bean extract as a novel non-invasive therapy for dry eye disease.. Int J Biol Macromol. 2026. PMID:41265593.PMID 41265593 ↗Journal Int J Biol MacromolYear 2026Study type Observational / otherEvidence strength LOW evidencePubMed link https://pubmed.ncbi.nlm.nih.gov/41265593/
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Observational / other LOW evidence YELLOWEnhanced Bioactive Coffee Cherry: Infusion of Submerged-Fermented Green Coffee Beans via Vacuum Impregnation. ↗Tangjaidee P et al.. Enhanced Bioactive Coffee Cherry: Infusion of Submerged-Fermented Green Coffee Beans via Vacuum Impregnation.. Foods. 2025. PMID:40238315.PMID 40238315 ↗Journal FoodsYear 2025Study type Observational / otherEvidence strength LOW evidencePubMed link https://pubmed.ncbi.nlm.nih.gov/40238315/
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Observational / other LOW evidence YELLOWAn experimental rat model of non-alcoholic fatty liver disease: Ameliorative effect of green coffee and prediction of disease activity. ↗Mete G et al.. An experimental rat model of non-alcoholic fatty liver disease: Ameliorative effect of green coffee and prediction of disease activity.. Adv Clin Exp Med. 2025. PMID:40237523.PMID 40237523 ↗Journal Adv Clin Exp MedYear 2025Study type Observational / otherEvidence strength LOW evidencePubMed link https://pubmed.ncbi.nlm.nih.gov/40237523/
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Observational / other LOW evidence YELLOWGreen coffee bean extract rich in chlorogenic acids prevents muscle capillary regression via inhibiting oxidative stress and enhancing angiogenesis. ↗Xing J et al.. Green coffee bean extract rich in chlorogenic acids prevents muscle capillary regression via inhibiting oxidative stress and enhancing angiogenesis.. Biomed Res. 2025. PMID:39894564.PMID 39894564 ↗Journal Biomed ResYear 2025Study type Observational / otherEvidence strength LOW evidencePubMed link https://pubmed.ncbi.nlm.nih.gov/39894564/
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Observational / other LOW evidence YELLOWThe effects of green coffee bean extract on blood pressure and heart rate: A systematic review and dose-response meta-analysis of randomized controlled… ↗Samavat S et al.. The effects of green coffee bean extract on blood pressure and heart rate: A systematic review and dose-response meta-analysis of randomized controlled trials.. Diabetes Metab Syndr. 2024. PMID:39368321.PMID 39368321 ↗Journal Diabetes Metab SyndrYear 2024Study type Observational / otherEvidence strength LOW evidencePubMed link https://pubmed.ncbi.nlm.nih.gov/39368321/
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Observational / other LOW evidence YELLOWAlterations in pH of Coffee Bean Extract and Properties of Chlorogenic Acid Based on the Roasting Degree. ↗Kim YK et al.. Alterations in pH of Coffee Bean Extract and Properties of Chlorogenic Acid Based on the Roasting Degree.. Foods. 2024. PMID:38890985.PMID 38890985 ↗Journal FoodsYear 2024Study type Observational / otherEvidence strength LOW evidencePubMed link https://pubmed.ncbi.nlm.nih.gov/38890985/
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Observational / other LOW evidence YELLOWAntimicrobial and Anti-Biofilm Activities of Coffea arabica L. Against the Clinical Strains Isolated From Diabetic Foot Ulcers. ↗Zubair M. Antimicrobial and Anti-Biofilm Activities of Coffea arabica L. Against the Clinical Strains Isolated From Diabetic Foot Ulcers.. Cureus. 2024. PMID:38371116.PMID 38371116 ↗Journal CureusYear 2024Study type Observational / otherEvidence strength LOW evidencePubMed link https://pubmed.ncbi.nlm.nih.gov/38371116/
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Observational / other LOW evidence YELLOWA Comparative Analysis of Three Antioxidants in Addition to Scaling and Root Planing in Stage Three Grade B Periodontitis. ↗Saha S et al.. A Comparative Analysis of Three Antioxidants in Addition to Scaling and Root Planing in Stage Three Grade B Periodontitis.. Cureus. 2024. PMID:38333482.PMID 38333482 ↗Journal CureusYear 2024Study type Observational / otherEvidence strength LOW evidencePubMed link https://pubmed.ncbi.nlm.nih.gov/38333482/
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Observational / other LOW evidence YELLOWClinical Evaluation of a Novel, Patented Green Coffee Bean Extract (GCB70u00ae), Enriched in 70% Chlorogenic Acid, in Overweight Individuals. ↗Verma N et al.. Clinical Evaluation of a Novel, Patented Green Coffee Bean Extract (GCB70u00ae), Enriched in 70% Chlorogenic Acid, in Overweight Individuals.. J Am Nutr Assoc. 2024. PMID:38227783.PMID 38227783 ↗Journal J Am Nutr AssocYear 2024Study type Observational / otherEvidence strength LOW evidencePubMed link https://pubmed.ncbi.nlm.nih.gov/38227783/
Score Transparency
0 of 10 approved references (score saturates at 10). More peer-reviewed studies = stronger evidence base.
Method: Q = number of approved references ÷ 10 (capped at 1.0)
Limited — mostly case reports or animal studies
Method: L = mean study-level weight across approved references. Level 1 (meta-analysis / systematic review) = 1.0; Level 2 (RCT) = 0.8; Level 3 (cohort/case-control) = 0.6; Level 4 (case report) = 0.4; Level 5 (animal / in-vitro) = 0.2.
Mixed or neutral — roughly equal benefit and risk signals
Method: D = (sum of risk-scored references − sum of benefit-scored references) ÷ total evidence score, then scaled from [−1, 1] to [0, 1]. 0.0 = pure benefit; 0.5 = neutral; 1.0 = pure risk.
One or more monitoring-level safety signals active
Method: S = 0.5 (neutral baseline) + sum of active signal severity deltas ÷ 10. Severity deltas: Critical = +2.0, High = +1.5, Moderate = +1.0, Low = +0.5. Capped at 1.0.
Final GIRI Score for Green Coffee Bean Extract. Risk level thresholds: Low 0–3.0 · Moderate 3.0–5.5 · High 5.5–7.5 · Critical 7.5–10.
Full methodology & data sources
The GIRI Score is computed entirely from structured data — no editorial scoring or subjective weighting is applied at any step.
- References: Only approved references are counted. Each reference is assigned an evidence level (L1–L5) and a direction (risk / neutral / benefit) by the reference manager or AI classifier.
- Safety Signals: Sourced from regulatory agencies (FDA, EMA, Health Canada, TGA, and others) and pharmacovigilance databases. Only active signals count toward the score.
- Formula version: GIRI Score v3.7.0 — Q × L × D × S × 10.
- Limitations: The score reflects published evidence and recorded signals as of the last update date. It is not a clinical risk assessment and should not replace advice from a qualified healthcare professional.
Risk Level Classification
Based on available regulatory signals and scientific evidence, this ingredient presents a moderate safety concern. Caution is advised, particularly at high doses or in sensitive populations.
0–3.0
3.0–5.5
5.5–7.5
7.5–10
The score pin shows exactly where this ingredient falls on the fixed risk scale.
What drove the Moderate classification for Green Coffee Bean Extract
A score of 4.0 places this ingredient in the Moderate band. Thresholds: Low 0–3.0 · Moderate 3.0–5.5 · High 5.5–7.5 · Critical 7.5–10.
0 approved references.
Limited — mostly case reports or animal studies (Level 4–5).
Neutral or mixed — benefit and risk signals roughly balanced.
No active signals — S component is at neutral baseline (0.5), contributing no extra risk weight.
No major regulatory restrictions or advisories recorded across monitored jurisdictions (FDA, EMA, Health Canada, TGA, and others).
How are the Low / Moderate / High / Critical thresholds defined?
The four risk levels are fixed score bands. A score is assigned to exactly one level based on where it falls:
| Level | Score | Meaning |
|---|---|---|
| LOW | 0.0 – 2.9 | Sparse or predominantly beneficial evidence. No active safety alerts. |
| MODERATE | 3.0 – 5.4 | Mixed signals — some risk alongside benefit. Caution at high doses or in sensitive groups. |
| HIGH | 5.5 – 7.4 | Multiple studies or regulatory alerts documenting adverse effects. Professional oversight recommended. |
| CRITICAL | 7.5 – 10 | Regulatory restrictions in one or more major jurisdictions. Serious documented harm. Avoid without specialist supervision. |
Thresholds are fixed constants (GIRI_Score_Utils::LEVEL_THRESHOLDS). They do not change per ingredient and are never subject to editorial adjustment.