... study assessed the thermogenic effects of p-synephrine alone and in conjunction with the flavonoids naringin and hesperidin in a double-blinded, randomized, place-bo-controlled protocol with 10 ... double-blinded, randomized, place-bo-controlled protocol to compare the effects of p-synephrine alone and in combination with different amounts of hesperidin and naringin on: (1) resting metabolism, ... 136: 404-408. 3. Bredsdorff L, Nielson IL, Rasmussen SE, et al. Absorption, conjugation and excretion of the flavonones, naringenin and hesperetin from alpha-rhamnosidase-treated orange juice...