Those are fake and misleading advertisements. If you believe them, you will be fooled. It is recommended to focus on adjusting a balanced diet, increasing exercise, relaxing your mood, and ensuring sleep. The principle is that consumption is greater than intake. Eat a full and good breakfast, and eat less or no dinner. The most important thing is to lose weight safely. Don't take medicine randomly. It will cause trouble if it messes up the endocrine system.