It is ok for Shen Yu to lose weight. I made it in Shen Yu slimming shop in Jiaozuo. I lost weight after doing 12 times 10 kg. I can also eat pasta, stir-fry, meat and have a full stomach. I won't be hungry. It's good. As for whether there are any side effects, I haven't found them yet, but I feel very relaxed after I finish.