What is the recommended dose of Green Coffee Bean Extract?

- **Look for:** Standardized to ≥45% chlorogenic acid (CGA); decaffeinated for isolating CGA effects; 200-400mg per serving; specific CGA content in mg - **Avoid:** Products marketed as "miracle we...

Is Green Coffee Bean Extract safe to take daily?

Green Coffee Bean Extract is rated "Generally Safe" based on clinical evidence. Always consult your healthcare provider before starting any supplement.

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Ingredient Research

Graded against 173,636 supplements + 177 published clinical interactions, sourced from PubMed, FDA CAERS, openFDA, NIH DSLD

Green Coffee Bean Extract

MODERATE EVIDENCESupplementLast updated

AVELOR SUMMARY

Green coffee bean extract (GCBE) contains chlorogenic acid — the compound destroyed by roasting — that was hyped as a "miracle weight loss" supplement after Dr. Oz's 2012 endorsement. The key study behind the hype (Vinson 2012) was RETRACTED due to data fabrication, and the manufacturer (Applied Food Sciences) paid $3.5 million to the FTC for false advertising. Our research shows chlorogenic acid does modestly reduce blood pressure (5 mmHg) and blood sugar, but the weight loss evidence is weak and tainted by fraud. This is the poster child for supplement industry overpromising.

WHAT IT DOES

Chlorogenic acid (CGA) — a polyphenol ester of caffeic acid and quinic acid — works through: (1) inhibition of glucose-6-phosphatase in the liver, reducing gluconeogenesis and hepatic glucose output; (2) inhibition of intestinal α-glucosidase, slowing carbohydrate digestion and glucose absorption; (3) NO-mediated vasodilation (similar to other polyphenols), lowering blood pressure; (4) AMPK activation, stimulating fatty acid oxidation. Roasting coffee at >200°C destroys 80-100% of CGA, which is why green (unroasted) beans are used. However, the fat-burning effects are modest at best — the dramatic results were fabricated.

OPTIMAL DOSAGE

Look for: Standardized to ≥45% chlorogenic acid (CGA); decaffeinated for isolating CGA effects; 200-400mg per serving; specific CGA content in mg
Avoid: Products marketed as "miracle weight loss" (red flag); non-standardized extract; products not declaring caffeine content; "proprietary green coffee blend"
Minimum effective dose: 120mg chlorogenic acid/day
Third-party tested brands: NutritionFacts-reviewed products, Applied Nutrition (GCA trademark)

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SAFETY PROFILE

Critical Interactions (Do Not Combine Without Medical Supervision)

No critical interactions identified.

Moderate Interactions (Monitor Closely)

Theoretical/Low-Risk Interactions

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Independently graded against 173,636 indexed supplements with 177 published clinical interactions, sourced from PubMed, FDA CAERS, openFDA, and NIH DSLD | Last updated:

Not medical advice. Based on published clinical research and systematic reviews.

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