A component of geranium oil, 1,3-dimethylamylamine is a sympathomimetic amine, meaning it mimics norepinephrine, which revs up the metabolic rate of muscle cells, increases fat mobilization and kicks up alertness in a big way. Plus, there is no unpleasant crash that was associated with old ephedra products. 1,3-dimethylamylamine is superior in every way!