I don't know what you mean by useful or useless. First of all, dark colors are not diet pills. Dark Lord is mainly used for people who gain muscle and break through the bottleneck period and have certain tolerance to nitrogen pump. The Dark Lord contains a lot of caffeine, and it is not recommended to take it if there is no basis for exercise and it is really necessary. Your side effects are obvious. 1 Gastrointestinal discomfort 2 palpitations 3 hand tremors 4 insomnia. For girls who only need to lose weight without shaping, the dosage of levorotatory 10000 is 15 ml, and oxygen is enough for two clas before meals. Therefore, you have to be clear about what your goal means before you can tell you what is the best. Shaping, losing weight, burning fat, gaining muscle and other drugs and training methods are not the same, or even quite different! Don't take it upon yourself to listen to the comments copied and pasted by the seller and upstairs. Take care of yourself, haha. This medicine is best not to be touched by strong men and night owls who are not metabolic professionals. Taking it will make you realize what it means to be energetic and not tired for 24 hours.