... response to p-synephrine or p-synephrine in combination with naringin and hes-peridin (Table 2). p-Synephrine differs from ephedrine in that it has a hydroxyl group on the para position of ... weight control agent. Key words: p-Synephrine, naringin, hesperidin, resting metabolic rate, heart rate, blood pressure Introduction The bioflavonoids hesperetin and naringenin are widely distributed ... Effects of p-Synephrine alone and in Combination with Selected Bioflavo-noids on Resting Metabolism, Blood Pressure, Heart Rate and Self-Reported Mood Changes Sidney J. Stohs1, Harry G Preuss2, Samuel...