Don't even bother. It is a rip off. It is mostly ephedrine, which you could buy for a lot cheaper. It might give you more energy but the ephedrine and caffeine will put a strain on your heart. It will not cause the serotonin release that occurs with MDMA and which gives MDMA its effects so it will not feel like E. At most it will give you energy, without the empathic qualities of real MDMA.