Synephrine is a very potent
thermogenic substance that is very similar to ephedrine. Studies have
shown that both ephedrine and synephrine successfully increased total
resting metabolic rate when compared to placebo. We have only limited
quantities of Synephrine HCL available at this time.
"Synephrine-caffeine offered almost same performance as
Study verifying Synephrine's similar effects to ephedrine http://ods.od.nih.gov/pubs/conferences/BucciPEPCRN_Ephedra_Presentation_Jan02.pdf