Theobromine (3,7-Dimethylxanthine) is a purine alkaloid, poorly soluble in water, present in cocoa beans, as well as the leaves of yerba mate, tea, coffee, cola and peanuts. It is a diuretic, lowers blood pressure and improves brain function (dilates the blood vessels of the brain). Also expands the blood vessels throughout the circulatory system, preventing atherosclerotic changes. Sometimes it is used in slimming diet. Combined with caffeine and polyphenols becomes thermogenic. In the sports supplementation formulations containing theobromine are used diuretics and fat burners. It is a component of thermogenics, pre-workout creatine stacks, as well as nitrogen boosters.