Dietary supplement. Mesolimbic beta agonist fat burning agent. Maximum human performance. Dren (Drenbuterol) belongs to a powerful new class of compounds called mesolimbic beta agonists, which have extremely powerful fat burning and euphoric activities. Drenbuterol is a patent pending compound scientifically formulated to stimulate both metabolic and mesolimbic pathways for extreme thermogenic fat burning and neurotropic feel good sensory.