The fourth condition which combined Advantra Z (50 mg p-Synephrine), hesperidin 100 mg, and naringin 600 mg, resulted in a RMR increase of approximately 17.7 % in comparison to placebo (10). To put this into context, the combination of 70 mg caffeine and 24 mg ephedrine has been demonstrated to increase RMR 8% in comparison to placebo (11)