Last verified: today
Coffee Powder
Also known as: ground coffee, roasted coffee powder, green coffee powder, Coffea arabica powder, Coffea robusta powder
Evidence under review. — Not yet rated
Ground coffee used as a supplement. Limited human trial data; most research covers food safety and lab uses.
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What it does
Coffee powder is finely ground roasted (or green) coffee bean material used in beverages and supplements. One small clinical study found that a single 200 mg caffeine dose from coffee affected...
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Evidence quality
Evidence base hasn't been formally rated yet. See research below.
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Clinical dose
No established dose (insufficient research data)
What the Science Says
Coffee powder is finely ground roasted (or green) coffee bean material used in beverages and supplements. One small clinical study found that a single 200 mg caffeine dose from coffee affected choroidal blood vessel thickness in the eye, suggesting caffeine influences microcirculation. Animal research suggests green coffee powder may help protect against oxidative stress in organs like the liver, kidney, and brain, though this has not been confirmed in human trials.
What It Doesn't Do
No human evidence from these studies that it boosts athletic performance. No proven fat-burning effect from the provided data. Don't assume 'coffee powder' in a supplement is the same as your morning cup — doses and forms vary widely. No evidence here it improves cognition, mood, or energy in a clinical setting.
Evidence-Based Benefits
A single caffeine dose from coffee reduces choroidal thickness in eyes with Fuchs uveitis syndrome.
Weak EvidenceEffective at: 200 mg caffeine (250 mL coffee)
Green coffee powder reduced oxidative stress markers in rat organs exposed to a toxic mold compound.
Weak EvidenceEffective at: 2000–4000 mg/kg in rats (human equivalent unknown)
Absorption & Bioavailability
Unknown — no pharmacokinetic data provided in the supplied studies
Red Flags to Watch For
- Coffee powder in supplements can be adulterated with cheaper fillers; near-infrared spectroscopy studies highlight this as a real food safety concern
- Ochratoxin A (a harmful mold toxin) has been detected in coffee products — one study specifically developed a sensor to detect it
- Bacterial contamination is a documented concern in coffee powder, as validated in food safety testing research
- Doses used in animal studies (2000–4000 mg/kg) are not translatable to human supplement use without further research
- Caffeine content is rarely standardized in 'coffee powder' supplements, making dosing unpredictable
Products Containing Coffee Powder
See how Coffee Powder is used in these analyzed products:
Research Sources
- PubMed
- NIH DSLD
This information is for educational purposes only and is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Last updated: 2026-05-25