There is a chemical in grapefruit called naringen that extends the effects of caffeine and ephedrine. This will allow athletes to consume smaller dosages of caffeine and and ephedrine and still get the same fat burning results. The weight-loss effects of Ephedrine are enhanced when combined with methylxanthines, caffeine, and salicylates. Aspirin is a commonly-used synthetic form of salicylate. In laboratory studies, salicylates doubled the fat burning effect of Ephedrine alone.
Salicylates are a prostaglandin inhibitor.
Certain prostaglandins act to inhibit lipolysis and are produced in response to adrenergic stimulation, prostaglandin inhibitors have the potential to enhance ephedrine's actions on fat loss. Ephedra - 334 mg. Kola Nut powdered extract - 400 mg. Naringen - 20 mg. White Willow Bark extract - 75 mg.