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