Hi, I have PCOS and was Sucribed metformin and I'm always hungry too. I was able to lower my insulin and they said I can stop metformin but I have to test every so often to make sure I dont go back into pre diabetes. I've changed my diet and if it wasn't for me working all the time I would be starving all day. I snack throughout the day. So that I'm not so hungry when I get off work. I do Greek yogurt or any kind of nuts throughout the day.