All weight-loss drugs will have side effects, such as nausea, upset stomach, weakness of limbs and so on. And some weight-loss drugs can make people easy to lose sleep. Coffee itself has the function of losing weight. I don't know much about the coffee you mentioned. You can check Baidu, but I suggest you exercise and keep your mouth shut. It's best not to take diet pills. Health is the most important thing. I hope it helps you.