Green Coffee Bean Extract is an appetite suppressant and may be used as for weight management, for detoxification, concentration, and boosting energy and stamina. Coffee beans are known as “green” in their raw, unroasted state. The green coffee beans are loaded with chlorogenic acid, which is responsible for their fat-fighting properties. (After roasting, the chlorogenic acid in coffee beans drops significantly.) Did You Know? Green coffee beans are much lower in caffeine than regular coffee beans, as well as being much higher in chlorogenic acid.