Green coffee extract comes from raw, unroasted coffee beans. It delivers chlorogenic acid, a compound that interferes with how the body absorbs carbohydrates.
People usually take it as a capsule or tablet before meals. Since the beans are not roasted, the extract keeps a higher amount of chlorogenic acid.
This supplement cannot replace a balanced diet or regular exercise. Most people handle it fine, but it does contain caffeine and can affect blood sugar. Talk to a healthcare professional before using it.