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Green Coffee

Green Coffee

Best for

Reduce belly and deep abdominal fat

Proven strong benefit · 180–500 mg/day for 6–12 weeks · 1 meta-analysis , n=985

14 papers · 2 claims · 44 outcomes scored · 2 positive

Outcomes

What green coffee actually does, by outcome

Each row is one outcome with effect size, evidence base, the dose that worked in trials, and time to first effect. Magnitude tiers come from native-unit MCID where available, Cohen's d otherwise.

Outcome Effect Evidence Dose Weeks Rank
Reduce belly and deep abdominal fat Proven strong benefit
large 		5 meta-analyses n=985 Meta-analyzed 180–500 mg 6–12 wk #1/51
Lose weight on the scale Likely real but unnoticeable
trivial 		7 meta-analyses n=350 Meta-analyzed 180–800 mg 6–12 wk #6/75
Buy well

Recommended Green Coffee products

Real products that dose Green Coffee where the research does, in a clean formulation, from brands we've audited. We only list ones we'd stand behind.

Chosen for adequate Green Coffee dosing vs. the studied range, a clean formulation (grade A–C), and independent brand-quality audits. Not sponsored.

Risk profile

Adverse events and known drug interactions

Safety events

dizziness mild
nausea mild
increased libido
fractured clavicle
right toe abrasion
drowsiness
stomach pain / upset stomach / diarrhea
abnormal liver function test (ALT/AST elevation)

Sources

  1. 1. The use of green coffee extract as a weight loss supplement: a systematic review and meta-analysis of randomised clinical trials. (2011) ↑
  2. 2. Consumption of green coffee reduces blood pressure and body composition by influencing 11β-HSD1 enzyme activity in healthy individuals: a pilot crossover study using green and black coffee. (2014) ↑
  3. 3. Supplementation of green coffee bean extract in healthy overweight subjects increases lean mass/fat mass ratio: A randomized, double-blind clinical study. (2021) ↑
  4. 4. Regular Consumption of Green Coffee Phenol, Oat β-Glucan and Green Coffee Phenol/Oat β-Glucan Supplements Does Not Change Body Composition in Subjects with Overweight and Obesity. (2022) ↑
  5. 5. Effects of green coffee aqueous extract supplementation on glycemic indices, lipid profile, CRP, and malondialdehyde in patients with type 2 diabetes: a randomized, double-blind, placebo-controlled trial. (2023) ↑
  6. 6. Effects of green coffee supplementation on paraoxonase-1 activity and malondialdehyde levels in Iranian women with polycystic ovary syndrome: a randomized clinical trial. (2024) ↑
  7. 7. The Effect of Green Coffee Supplementation on Lipid Profile, Glycemic Indices, Inflammatory Biomarkers and Anthropometric Indices in Iranian Women With Polycystic Ovary Syndrome: A Randomized Clinical Trial. (2022) ↑
  8. 8. Effects of Caffeinated and Decaffeinated Coffee Consumption on Metabolic Syndrome Parameters: A Systematic Review and Meta-Analysis of Data from Randomised Controlled Trials. (2021) ↑
  9. 9. Appetite and Satiety Effects of the Acute and Regular Consumption of Green Coffee Phenols and Green Coffee Phenol/Oat β-Glucan Nutraceuticals in Subjects with Overweight and Obesity. (2021) ↑
  10. 10. A randomized double blinded placebo controlled clinical trial for the evaluation of green coffee extract on immune health in healthy adults. (2022) ↑

Generated August 14, 2026

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