Not reliable, not to mention listening to random letters, those are false, advertisements are deceptive, and if you believe them, you will be recruited. It is recommended to focus on adjusting a balanced diet, strengthening exercise, relaxing and ensuring sleep. The principle is that consumption is greater than intake. Eat well at breakfast, and eat little or nothing at dinner. It is most important to lose weight safely, not to mention taking medicine indiscriminately, which will be troublesome to confuse endocrine.