Ingredient guide
Green coffee bean extract is unroasted coffee rich in chlorogenic acid, sold for weight. Small trials and meta-analyses show a modest average weight reduction, but the studies are small, short, and of low quality.
Limited evidenceGreen coffee beans are simply coffee beans that have not been roasted. Roasting destroys much of a compound called chlorogenic acid, so unroasted beans are far richer in it. Green coffee extract concentrates that chlorogenic acid, and it usually retains some caffeine too. It is sold almost entirely as a weight supplement.
Chlorogenic acid is thought to slow the absorption of carbohydrate in the gut and to influence how the body handles sugar and fat. The caffeine adds a small, separate metabolic nudge. Together these mechanisms make a plausible case for a minor effect on weight and blood sugar, which is the pitch you will see on the label.
A systematic review and meta-analysis of controlled trials found that green coffee extract supplying around 500 mg of chlorogenic acid per day reduced body weight by roughly one kilogram on average. Some individual trials in people with high blood sugar also reported drops in weight, waist size, and blood markers.
The reviewers were careful to flag the limits. The trials were small, short, and often of low quality, and some carried funding ties. A famous televised study was later retracted, which damaged the field's credibility. We grade the human evidence as limited. Any effect is small and best seen as a minor aid alongside diet, not a shortcut.
Products vary a lot, but trials commonly use extracts standardised to chlorogenic acid providing roughly 500 mg per day. Keep your expectations modest and remember the caffeine counts toward your daily total. If you are caffeine sensitive or take blood pressure or blood sugar medicine, check with a healthcare provider before starting.
Trials often use extracts providing around 400 mg three times a day, or about 500 mg of chlorogenic acid per day, for several weeks. Doses and extract strengths vary widely. Ask your healthcare provider before starting if you are sensitive to caffeine or take blood sugar or blood pressure medicine.
Cappuccino MCT Cappuccino MCT Cappuccino MCT is positioned for cappuccino MCT is a coffee that burns fat!, accelerates calorie burning, helps to shape the body. Use this as a product research starting point until the benefits, ingredients, and safety notes are reviewed. Read review 
Green Coffee 5K Green Coffee 5K Green Coffee 5K is positioned for bURN FAT QUICKER, speeding up metabolism, safe weight loss. Use this as a product research starting point until the benefits, ingredients, and safety notes are reviewed. Read review Only a little. Meta-analyses show an average reduction of about one kilogram, but the trials are small and low quality. It is a minor aid at best.
It is the main active compound in green coffee. Roasting destroys most of it, which is why unroasted green beans are used to concentrate it.
Yes, usually some. That can give a mild lift but also adds to your daily caffeine and can cause jitteriness or sleep trouble.
For most people in the short term, but the long-term safety of concentrated chlorogenic acid is not well studied. Caffeine-sensitive people should be cautious.