Green bean coffee extract is the extract of unroasted green coffee beans. There are few research that indicates that the chlorogenic acid which is a special compound which is found in this particular green bean coffee which helps to later or benefits your glucose metabolism as well as your fat metabolism. As we all know that the metabolic imbalance of PCOS has two major imbalance. One of glucose metabolism, in terms of having insulin resistance or having a poor insulin resistance in response and the fat imbalance of the fat metabolism in terms of obesity as well as having issues with processing fat in the body. So yes, Green bean coffee extract is not the best supplements that you can go for, but it is another supplement which is highly effective in helping you to set you on a definite path of losing weight. It is one of the recommended supplements that you can go for if you are trying to lose weight with PCOS. That said, it is also important that there are not many research studies which show that it is extremely effective and it leads to definite weight loss with PCOS. We have not come across with that many studies. The studies which exist about Green bean coffee extract are with less amount of patients and the cross section of public that they have studies is really small. Btu it is important to know that it is not harmful to take Green bean coffee extract. That can definitely be included. Some other studies also shows that it improves insulin resistance. It also helps the body to process fat in a better way, so it is recommended. However it is not the best supplement that you can take for weight loss in PCOS.