Dietary supplements containing extracts of the plant geranium are quite popular for their fat burning and weight loss properties. Geranium supplements are also known by other names like DMMA (dimethylamylamine), 1,3-dimethylamylamine, 4-methyl-2-hexylamine, 1,3-dimethylpentylamine etc. Geranium extracts works by affecting the central nervous system and forcing the body to release more of the hormones epinephrine and norepinephrine. These are the body’s best natural fat burning hormones and can significantly increase the body’s natural fat burning abilities. The hormones boost the body’s metabolic rate, improve alertness and increase the rate of fat metabolism. The extract also acts synergistically with caffeine in greatly enhancing the fat burning process.